50 English Slang Expressions and What They Mean
English slang can make films, messages, and casual conversations easier to follow, but register and region matter. Treat these expressions as recognition vocabulary first. Notice who uses them, their tone, and whether the situation is American, British, Australian, online, or workplace English before copying them.
50 slang and casual expressions
| English | Japanese / use |
|---|---|
| awesome | 最高、すごい |
| cool | いいね、かっこいい |
| no worries | 大丈夫、気にしないで |
| my bad | 私のミス |
| hang on | ちょっと待って |
| hang out | 一緒に過ごす |
| chill | くつろぐ・落ち着く |
| catch up | 近況を話す |
| grab a bite | 軽く食べる |
| I'm in. | 参加するよ |
| I'm down. | いいよ、参加する |
| I'm good. | 大丈夫・結構です |
| sounds good | いいですね |
| fair enough | それももっともだ |
| for real? | 本当に？ |
| seriously? | マジで？ |
| no way | まさか・すごい |
| you've got this | きっとうまくいく |
| give me a sec | ちょっと待って |
| what's up? | どうしたの・元気？ |
| not much | 特に何も |
| kind of | ちょっと・ある程度 |
| pretty much | だいたい |
| a bit | 少し |
| totally | 完全に・本当に |
| literally | 文字どおり（強調にも使う） |
| actually | 実は・実際には |
| anyway | とにかく |
| by the way | ところで |
| it depends | 場合による |
| I'm broke. | お金がない |
| cheap | 安い（品質が低い意味にも注意） |
| a rip-off | ぼったくり |
| bucks | ドル（くだけた言い方） |
| deal | お買い得・取引 |
| buddy | 友達・相棒 |
| dude | 君・やつ（非常にくだけた表現） |
| mate | 友達（主に英国・豪州） |
| folks | みんな・人々 |
| crash | 泊まる・寝落ちする |
| bail | 急にやめる・帰る |
| ghost | 突然連絡を絶つ |
| mess up | 失敗する |
| figure out | 理解する・解決する |
| show up | 現れる |
| take it easy | 無理しないで |
| I'm beat. | へとへとだ |
| I'm starving. | お腹がぺこぺこ |
| that's rough | それは大変だね |
| fingers crossed | うまくいくよう祈って |
Slang in context
Leo: Do you want to grab a bite after work?
Mei: I'm in. Give me a sec to finish this.
Leo: Cool. There's a new place around the corner.
Mei: Sounds good. I'm starving.
Use slang safely
- Understand the neutral sentence first.
- Check region, age group, and strength.
- Listen to several natural examples.
- Use the neutral version until the relationship is clear.
- Never copy insults only because friends use them affectionately.
FAQ
Is I'm good positive?
It can mean “I am fine” or politely decline an offer. Situation and intonation decide.
Should I use dude at work?
Usually not in formal interaction. It can be friendly among peers but sounds overly casual in many workplaces.
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