A topic, phrase or word that emotionally sets someone off. Could refer to anger, or reliving a traumatic experience. Sometimes this is logical, other times it seems like an attention grab. It is fairly common for certain communities on, for example, Livejournal to be overly sensitive to people's 'triggers' (often but not always relating to sexual assault)--any mention of violence may be censored.
(1) Man, I know I shouldn't have gone off on Eric that way, but that racist joke he made triggered me big time and I flipped my shit.

(2) I got kicked off that livejournal group for not lj-cutting my post talking about the rape scene in the movie I watched last night. Some girl said it triggered her and the mods were on her side.

by AllisonLinn July 11, 2008
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A person who is ill tempered and or get's angry easily.
"Look the trigger is laughing at you"
by chadarinochizmini February 10, 2017
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A word used often by idiots on Tumblr to justify their bitchy attitudes, most of whom don't know what a real traumatic experience is.
OMG STAHP SAYING THE WORD "PINEAPPLE"...IT'S MY TRIGGER WORD YOU CIS-LOVING SCUMBAG!!!!!!! RAAAAAAAAAAPE!!!!!!
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a disease someone developed after being triggered many times before.
Jason has been diagnosed with triggerness.
by maphuda March 8, 2017
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irresponsible behavior, less than acceptable occurance, bullshit. when tlc said they didnt want no scrubs, they meant they didnt want no triggeration.
an example of triggeration is when one of your boys chooses to hang out with a girl rather than go to the club wit his boys. a person who continually acts irresponsible is known as a habitual triggerator.
by qt24 August 1, 2010
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Okay, kiddos. Enough of this 'landwhale' bullshit. I'm about to tell you what REAL triggering is.

To be 'triggered' is NOT to be offended by something. It's actually quite different from that. To be triggered is to have a certain stimulus, be it a word, a place, a person etc, set off (or trigger) a memory linking back to a traumatic point in your life (i.e. rape, a local terrorist attack, or any sort of horrible event), resulting in negative effects like anxiety attacks (and that's just one of the many things that can come from being triggered. Trust me, it can get so much worse). It is NOT something to be treated lightly.

I'll conclude this with a rundown of tips for if you ever come across someone who can be triggered.

1: Do not make fun of them. Triggering is a serious issue which should be treated with care and respect.
2: Do not start calling them things like 'SJW' or 'Landwhale' or whatever other bullshit you might associate with triggering. It has nothing to do with that.
3: Do not, I repeat, do NOT (I repeat again, FUCKING DO NOT) attempt to trigger them. You should already know this, but I'm saying it anyway. DON'T TRY TO TRIGGER PEOPLE, YOU FUCKING ASSHOLE. Don't even consider it. You can do some serious damage to a person's mental state if you do. You keep that in fucking mind.

Now, I'd appreciate some upvotes so we can get this ACTUAL definition of triggering to be the top definition, so no one has to see that disgustingly mean 'landwhale' definition again.
Janet was raped when she was a child. Years later, Brad, an internet troll, triggered her deliberately. Brad's a fucking asshole.
by OprahDollarsAreNotAThing September 4, 2016
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A trigger is an experience that causes a person to recall a traumatic moment in their life. Often misused by assholes trying to belittle people's horrible experiences.
Tina: Hearing people talking about dogs hit by cars triggers me because I saw my dog die that way.
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Justin: Wow, you're mean.
Asshole Adam: oh, are you triggered??? lel
by poofless_af December 1, 2016
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