Or inSIGnificant, depending on what you're meaning. Refers to how important/relevant a military-grade firearm is to a matter under discussion.
For someone who loves hunting and/or target-practice, finding a SIGnificant other can be a bit challenging, since not everyone in da dating-pool is comfy with a guns-'n'-ammo lifestyle.
A significant other is someone who has good credit and is in a relationship with someone who has bad credit.
Significant
Sign if I can't
I want a new whatever but my credit score low so they say no to a loan.
Got me a significant other.
Looking all cute and shit, take significant other with me to get new whatever and apply for loan again. When they say no, I look at my significant other and bat my eyes and they will sign if I can't.
Great and big, has a colossal impact.
My friends behavior has changed significantly.
sufficiently great or important to be worthy of attention; noteworthy.
"in times of stress her dreams seemed to her especially significant"
The person you bang because he or she, unlike you, has wheels.
"Can't make it over just now, but my Significant Uber gets off at 3, he can bring me before 4."
Commonly abbreviated as SED, Significant Ear Damage is genre of music created for Zac Seif's music, specifially a song called "I can't survive," because even Emo is not terrible enough a genre to categorize his music as.
Guy 1: Did you hear Zac Seif's new song? It's the best example of Significant Ear Damage music out there!
Guy 2: Thanks for the warning, I'll be sure to avoid it!
Limp Bizkit’s 2nd studio album
“Dude have you listened to Significant Other yet? It has some sick Wes Boreland riffs.”