Can you guys give me a slang/informal words that you think are essentials or you think that non speaker would never heard of this type of words?

A lot of English slang is specific to peer group or region. It’s perfectly fine for a teen to say “No cap, go off king!” But people would look at you oddly if you said that as an adult. Another example, if you had never been to, or lived in, the Southern US and yet used common colloquials like “Bless your heart.” “I’m fixin to…” “Hush up.” Etc. anywhere else that would also be considered kinda odd. My best advice is to listen to the natural conversations you’re having with other English speakers in your life and use some of those slang words. Chances are, they’d be the most regionally and age appropriate. (Native speaker USA)

As a native speaker, I can tell you that you don’t need to know any of these words. Not the words from the list that OP said not to talk about… And not from the list OP said to talk about… This is a level of word that you do not need to know. None are essential. How do I know? I am a need of speaker and I only know one of those words… solely because we laugh that such a word is a word.

"Like" is a common filler, but can also be used to say, "I'm paraphrasing this person." For example: "And then she was like, 'I'm not giving you anything'"

"Finna" This word can mean "I am going to" "I want to" "what are you planning?" "I'm getting ready to" "We don't have any milk, I'm finna go to the corner store." "That guy looks like he's finna fight!" "You finna go to the movie?" In some US regions they have the phrase "fixin' to" which I believe "finna" is a variation of.

I don't think there are any that would qualify as "have to know" for all of the English speaking world. Slang is usually regional so mine are a mix of NE USA and SE USA. • Wicked/Sick = Awesome or amazing • Cut off = Turn off/Shut of • A minute/a hot minute = a long time Some terms that I guess could be considered brain rot? Unsure. But they are more online terms. • Salty = Bitter/Angry • Spicy = This one can mean a lot of things... inappropriate (sexual or suggestive) OR angry OR hot (but not the normal meaning as in spicy food) if I think of more I'll come back and add them :)

I don't know, Thingamajig?

Such words are not universally used across all anglophone regions. You need to specify a region. I am a British native speaker. I don't use "wanna" or "gonna" and lowkey is a not slang or informal. I have heard of the word "goon" from movies and "red mist" as a visualisation of anger in a book, but none of your other words.

Supercalifragilisticexpialidocious is a word popularised by the movie "The sound of music" and was actually fairly common when I was a kid, though I've not heard anyone say it in a long while. It's essentially an especially complex filler word. Not really useful, but you could potentially use it to impress a friend.

Well if you're learning English you'll need to know how to curse. In America, that's our "informal" version.

Kai Cenat is a person, not a word, unless I missed something and the kids are using his name as a word? The only thing separating the first list from the second is longevity. All of the words on your second list were scorned and looked down upon as slang when they were introduced and were only accepted with time. None are essential and not everyone uses all of them -- wanna/gonna are probably the most common. "Ain't" is common in certain dialects and in certain phrases but would be unusual for a non-native speaker to incorporate into their regular vocabulary. I've never even heard of "red mist."

You could learn some of the commonly used rhyming slang words like "barnet" or "porkies"

This is a bit tricky because slang is so regional. What I might suggest as a Canadian from Ontario will be completely different from what an American from the South or a what British person would say.

You can add "bloody" to anything as a way to accentuate it in England.  "That's bloody brilliant" it's really brilliant "That's bloody awful" it's really awful Or the many ways 'piss' is used but I'm not sure if that's actually well known?

As a native speaker, what does “red mist” mean?

Gotta or got instead of have (to). I gotta go. I got the best story! Drop the “g”s on gerunds- doin’, goin’, Dunno- I don’t know Whatever and done are used a lot if you’re getting frustrated with the conversation. Ok…whatever. Let’s move on. (Friend walks off in middle of a conversation) Welp, I guess she’s done. (Done with the conversation) Welp- well, it’s kind of used for sarcasm and regional. Kinda- kind of That’s kinda my point. Many words + of or “to” the of becomes an “a”. You wanna get coffee? Wanna- want to

Uffda and ope are common Midwestern/Minnesotan sayings.

UK here. Crack on - to get on with work, often quickly. Also get cracking. Crack this out - produce something quickly. The word "Chuck" is used a fair bit. It's chucking it down - raining heavily. Chuck it on the floor/shelf/other place - find a spot to put something, often temporarily. Don't actually throw it. I'm going to chuck - going to vomit. Caterwauling - wailing like a cat. Usually used to describe awful singing. Pop or nip. To go somewhere quickly and not for long. For example "Pop to the shop", "Nip across the road" (often used to describe a quick visit to a neighbour opposite you). This is used a lot. I'm not having this/This is not on - I'm not going to put up with being treated like this/This is unacceptable. For example "Look at all this mess, I'm not having this". "The neighbours are playing loud music at midnight again, this is not on, I'm reporting it". Leg it - run away or hurry for something. A lot of slang words will come up if you Google. They're usually pretty accurate. You might find some more useful stuff that way.

Darn it, dang it, dog gone it, hotsy totsy

Kai Cenat is a word? Holy crap we are cooked

"Like crazy / Like mad / Like Hell" = very quickly, forcefully, or to an extreme degree "Like Hell" can also mean "That's not true" in an aggressively rude way, though. The following exchange: "I ran like Hell!" "Like Hell, you ran!" Means: "I ran as fast as I could!" "No you didn't! You didn't run at all!"

When someone asks a question, you can start off with "I mean, [....]" - often used when you feel your response may require justification, and so your answer to the question is implied by the justification you give! eg: "Do you really think that the third season was garbage?" "I mean, you can't deny it's way worse than the previous season was!' (Implied: yes, I think the third season was bad) --- "Do you want chicken or eggplant for dinner?" "I mean, we said we were eating vegetarian this week." (Implied: I want eggplant for dinner) --- You can even use it by itself to answer a question, depending on how the question is phrased, where it will imply "I know you may disagree, but thats how I feel about it" "You WANT her to stay with us for a month?" "I mean...."

ape shit - meaning going crazy - “he went ape shit after getting the news” slaps - a song that’s good or is bass-heavy - “this song slaps” (note that “slaps” does NOT refer to food or other things as it’s a slang word from the san francisco bay area popularized by E-40 referring to people’s trunks ‘slapping’ from big subs installed for loud bass notes) smacks - use to refer to food that’s good - “that place smacks” (if the restaurant has good food) hurt/hurt squad - someone who is ugly - “he’s so hurt” or “he’s hella hurt squad” finna - “fixing to” - means something that you want to/are going to do - “you finna stop by the party?” hella - lots of/very - “she’s hella funny” or “there’s hella people here” salty - being bitter or upset - “she’s so salty after coming in second place in the contest” dead - expressing something that’s funny - “I’m dead, that was so funny”

“Ass” can be very complex in its usage https://youtu.be/RAGcDi0DRtU?si=jNh1WjMO0MHiHuON

We'll "cross that bridge when we get to it" is an idiom that means *we will not make a decision or handle a situation yet - we will wait until the moment the situation/decision is upon us.* "Burning bridges" or "burning a bridge" it's an idiom that refers to ending your connection/relationship to another person/group in a way that would make it permanent, implying that as a result of your actions you will not be welcome back. "We'll burn that bridge when we get to it" is a satirical combination of those two idioms which means *you will take action/make your decision in the moment, and you're certain to fuck it up irrevocably.*

"Shit" is an explicit term for poop: *I gotta take a shit* "Shit" can also mean a *things or stuff*: *I have a bunch of shit in my car* "I'm the shit" means *I'm the best*. "I'm shit" means *I'm awful*. "A load of horseshit" means *a large amount of untruthful or untrustworthy information.* "Bullshit" or "That's bullshit" is a retort that can be used to accuse someone of saying/spreading untruthful information. "The good shit" refers to something that is high quality.

Red mist?

'What the hell'/'-the hell?' (less severe) & 'What the fuck'/'-the fuck?' (more severe) to indicate surprise and confusion. Depending on tone can also lean towards anger, bordering on rage. Very simple but a common informal phrase. When around children, the devout and the elderly, go for 'what the heck' because, at least in the US, people can be very weird around swearing.