Crucial 

First, to all the haters of this word, shut the fuck up bruh you're on URBAN DICTIONARY. Quit acting holier-than-thou like you give a fuck about the bastardization of the language, it's slang – deal with it.
#Facts

The term "crucial" is used in situations that pop up that are more serious than others, kind of in a way nodding to the actual definition of the word (necessary) with a slight difference. Usually used after the word "that's" to signify importance to the subject. Sometimes it fits very well into context despite the unorthodox usage.

"That 3 pointer by Kyrie in the finals was so crucial"

" You got an iPhone 7 but didn't bring the thing for the aux? Damnnn that's crucial"

Crucial by Mich St SUCX November 12, 2016

Crucial 

Used to define a negative situation.

Damn bro. Probation was crucial today I almost got tested and I woulda failed

Crucial by Joriginal October 22, 2018

crucial 

hot daddy discord user guy

"omg crucial please fuck me"

crucial by hotesexlord69 November 6, 2022

crucial pull

1.a. Picking up a really hot chick at the bar when you're on a big losing streak

1.b. Getting laid after a long layoff

"bro I totally hooked up with her last night, that was a crucial pull"

crucial pull by DankJ March 27, 2009

Crucial Dimer 

This is rough slang from Iowa referring to any girl who is a perfect 10, but who am I kidding Iowa has no hot girls, Corn makes you ugly.

Alex Reid: Duuuuu did you see that Crucial Dimer at Kohls today, she was surrounded by those jank, krusty girls?

Everybody else: What the fuck does that mean????

Crucial Dimer by Big C-Money January 16, 2011

crucial ligament 

typically the word used to express excitement after fissure sniping someone from the forest picking mid in the game Heroes of Newerth.(Behemoth Carry)

Ryan "That fool just got the crucial ligament trying to snatch the rune."

Alec "No f'n way bro."

"Fissure snipe killed Dumbledore"

crucial ligament by Steve Muffly December 18, 2009

Crucial and Flame

adj. Referring to something that is so crucial that it is flame, or vice versa. One's level of marijuana influence can be measured by the amount of times he/she says "crucial" or "flame" during a recorded amount of time.

Example 1:
Harrison: Crucial
Nick: and Flame

Example 2:
Tommy: Crucial
Harrison: and Flame
Harrison: but mostly Crucial
Harrison: and not so much Flame

Example 3:
"Crucial and Flame"

Crucial and Flame by Doom? September 26, 2014