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Quizzes > Personality & Relationships

Is My Brother a Narcissist? Sibling Signs Quiz

Quick, free narcissistic sibling test. Instant results.

Editorial: Review CompletedCreated By: Judith De BruijnUpdated Aug 25, 2025
2-5mins
Profiles
Paper art illustration for narcissistic sibling quiz on dark blue background

This quiz helps you explore the question, "Is my brother a narcissist?" by spotting common patterns and signs in sibling dynamics. Answer a few quick questions and get practical ideas for next steps. If you're also wondering about a sister, see is my sister a narcissist. For family patterns, try the narcissistic mother quiz and narcissistic father quiz.

After a call with your sibling, what do you most often notice in yourself first?
Clear signals about what repeated dynamic just played out
Confusion about whether things were fine or not
Relief that you kept things smooth, even if you swallowed your needs
A steady sense that you honored your limits, whatever their reaction
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When your sibling dismisses a feeling you share, your most common move is to...
Name the pattern and pause before responding
Second-guess yourself and wonder if you overreacted
Smooth it over and apologize to keep things calm
Reiterate your boundary and end the chat if needed
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How do you plan contact around holidays to protect your energy?
Predict the usual hot spots and pre-set limits
Wait and see, hoping the mood will stay good
Show up fully and absorb tension to keep peace
Set clear windows for contact and stick to them
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When interactions swing from sweet to sharp, your interpretation is...
A recognizable cycle I can prepare for
Confusing and hard to read without more time
A cue to minimize myself to prevent escalation
A signal to tighten boundaries regardless of charm phases
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Which phrase best reflects your current stance with your sibling?
I see the pattern and choose when to engage
I need more clarity before I change anything big
I try to keep harmony even if it costs me
I set limits and let their feelings be theirs
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What guides you most when deciding whether to reply to a loaded message?
How similar messages have gone in the past
A hope that this time might be different
What will keep the peace right now, even if I feel small
My boundary plan for tone, timing, and topics
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In group settings when your sibling takes the spotlight, you tend to...
Notice the pattern and disengage from the pull
Feel unsure whether to speak or wait it out
Step back to avoid rocking the boat
Redirect or exit when the dynamic gets draining
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Your most present growth edge in this relationship is...
Accurately naming what repeats and how it lands in me
Gathering enough data to trust my experience
Letting go of over-explaining to keep others calm
Holding firm on limits without guilt spirals
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When you journal about your sibling dynamic, your entries most often highlight...
Recognizable cues and your body's responses
Moments that felt good mixed with uneasy ones you can't place
Ways you softened yourself to avoid conflict
Experiments with time limits, topics, and exits that worked
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If a boundary upsets your sibling, your default inner story is...
Their reaction reflects their pattern, not my worth
Maybe I should wait for a better moment to try again
I should apologize so we can move on smoothly
I can be kind and still hold the line as stated
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Which body cue do you trust most to gauge the health of an interaction?
The familiar tightening that follows a known pattern
A foggy, unsettled feeling that I can't yet define
The sense of calm that comes when I avoid conflict
The grounded exhale after asserting a clear limit
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When extended family urges you to keep the peace, you most often...
Recognize pressure and decide based on past outcomes
Delay decisions, hoping clarity will come later
Agree and take on the role of diffuser again
Re-state your limits and let others have their feelings
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When your sibling swings back with affection after tension, you usually...
Note the cycle and slow the pace intentionally
Feel hopeful but unsure what changed underneath
Accept quickly to avoid another flare-up
Acknowledge kindly while maintaining your limits
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How do you keep track of what actually helps in this relationship?
Log patterns and outcomes to guide choices
Rely on recent moments and gut, which can be mixed
Gauge by how calm everyone else seems with me
Use a simple plan for time, topics, and exits and review it
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Mid-conversation, the most helpful question you ask yourself is...
What pattern is this and what choice serves me now?
Am I overreacting or missing something here?
How can I soften this so they don't blow up?
What boundary do I need to state or restate now?
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In the next three months, the result you want most is...
Consistently naming patterns before they hook me
Clarity about what helps and what harms after contact
Fewer apologies and less self-erasing to keep peace
Reliable boundaries that calm my nervous system
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When you are blamed for your sibling's mood, you tend to...
Recognize the pattern of blame-shifting and pause
Wonder what you said wrong and replay the convo
Apologize quickly to restore calm, even if unsure why
State your boundary and exit if the blame continues
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When sharing personal news with your sibling, you most often...
Notice if they redirect or diminish and adjust accordingly
Feel unsure whether they'll be supportive this time
Downplay it to avoid provoking envy or criticism
Share briefly and keep details private by design
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Your approach to repair after a rough exchange looks like...
Acknowledging the cycle and suggesting a reset later
Waiting for a friendlier mood before attempting repair
Apologizing for your reaction even if you were hurt
Clarifying your boundary and proposing limited contact for now
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The role of outside support (friends, therapy, education) in your process is...
A mirror that helps me spot recurring dynamics faster
A place to explore confusion and gather context slowly
A way to learn scripts that keep things calm for others
Accountability to keep my boundaries intact under pressure
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When your sibling pushes a boundary you stated, you typically...
Notice the repetition and slow the interaction down
Question whether you stated it clearly enough
Restate it with extra explanations to keep calm
Repeat it briefly and end contact if not respected
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In moments when your sibling is unexpectedly generous, you usually...
Note the context and wait to see if the cycle repeats
Feel hopeful and postpone any limits you were trying
Respond with extra praise to reinforce the calm
Receive the good while keeping boundaries unchanged
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How do you handle topics that reliably spiral?
Label them mentally and sidestep early
Test the waters each time to see if it's safe now
Stay and soothe to prevent escalation
Decline the topic and change or end the conversation
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When you sense boundary pushback, your communication style becomes...
Neutral and brief to avoid feeding the pattern
Hesitant, gathering more evidence before acting
Over-explanatory to maintain harmony at all costs
Direct and contained, with a clear next step if needed
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How do you relate your sibling's behavior to your self-worth?
I separate their choices from my value on purpose
I'm unsure; their moods still sway how I see myself
I often internalize blame to keep the peace
I root my worth in my own standards and boundaries
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What do you do when a conversation turns sharp without warning?
Identify the switch and reduce engagement quickly
Stay a bit longer to see if it settles down
Deflect and appease so the mood improves
End the conversation and revisit only with clear terms
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Your approach to privacy with your sibling is best described as...
Share selectively based on past misuse of info
Share, then reevaluate if I feel off afterward
Share more to avoid seeming distant or rude
Keep tight boundaries and offer minimal details by choice
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When planning for an upcoming conversation, you...
Map likely patterns and choose responses in advance
Go in open, then assess after how it felt overall
Prepare to de-escalate if needed, even if I go quiet
Decide my limits up front and my exit points clearly
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I do not need to diagnose my sibling to set boundaries.
True
False
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Boundaries are punishments meant to control others.
True
False
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0

Profiles

  1. The Empathetic Observer -

    Your sibling shows only occasional attention-seeking and generally respects boundaries. While subtle signs of sibling narcissism may pop up, they tend to be more supportive than self-serving. Tip: Maintain open communication to reinforce healthy dynamics.

  2. The Subtle Self-Server -

    Your quiz results suggest moderate narcissistic sibling traits: a need for praise and occasional manipulation in shared activities. You might wonder "is my sister a narcissist" or "is my brother a narcissist" when they redirect conversations back to themselves. Tip: Set clear limits and use "I" statements to protect your well-being.

  3. The Chronic Center-Stage -

    This narcissist sibling often dominates family gatherings, dismisses others' achievements, and thrives on drama. Your results from the is my sister a narcissist quiz point to persistent grandiosity and emotional disregard. Tip: Establish firm boundaries and seek support from other family members.

  4. The Toxic Tornado -

    High on the sibling narcissism spectrum, this sibling uses gaslighting, guilt trips, and public put-downs to maintain control. If you've taken the narcissistic sibling quiz and identified these behaviors, you may need strategic self-care. Tip: Consider professional guidance and limit contact when necessary.

  5. The Extreme Narcissist Sibling -

    Your results reveal severe narcissistic sibling traits, including lack of empathy, manipulative rages, and refusal to acknowledge personal faults. Recognizing these red flags in the is my brother a narcissist quiz can be the first step toward protection. Tip: Prioritize your mental health and explore therapy options.

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