Translation guide
The English phrase 'fool around' has several distinct meanings, from playful behavior to wasting time to sexual activity. This guide helps learners choose the right Japanese expression for each situation.
To behave in a playful, silly, or joking manner, often with others.
The most common and versatile word for fooling around in a playful or silly way. Can be used for joking, messing around, or acting up.
子供たちが教室でふざけていた。
The kids were fooling around in the classroom.
ふざけるな！
Stop fooling around! / Don't be ridiculous!
To act playfully or clown around, often by making funny faces or gestures. Slightly more childish or comical than ふざける.
彼はいつもおどけてみんなを笑わせる。
He's always fooling around and making everyone laugh.
To frolic or play around, often used for animals or children playfully wrestling. Can also mean to flirt playfully.
子犬がじゃれ合っている。
The puppies are fooling around with each other.
To spend time doing nothing productive, often instead of working or studying.
To laze around, do nothing in particular, or waste time in a relaxed way. Very common for describing unproductive downtime.
週末は家でだらだらしていた。
I fooled around at home all weekend.
Literally 'to play,' but can imply fooling around instead of working. Context makes the meaning clear.
仕事中に遊んでいると、上司に怒られるよ。
If you fool around during work, the boss will get mad.
To skip work or responsibilities, to slack off. Stronger implication of neglecting duties.
To have sexual relations without serious commitment, or to be sexually unfaithful.
When used in a romantic/sexual context, 遊ぶ means to fool around or play the field. Often implies a lack of seriousness.
彼は結婚しているのに、他の女と遊んでいる。
Even though he's married, he's fooling around with other women.
Specifically means to cheat on a partner or have an affair. More direct than 遊ぶ.
彼氏が浮気しているみたい。
It seems like my boyfriend is fooling around.
A more explicit phrase meaning 'to have a physical relationship.' Used when the sexual aspect is clear.
彼らは付き合っていないけど、体の関係を持っている。
They're not dating, but they're fooling around.
To handle or experiment with something in a non-serious, often unskilled way.
To fiddle with, tamper with, or mess around with something. Can be used for physical objects or settings.
スマホをいじっていたら、変な設定にしてしまった。
I was fooling around with my phone and messed up the settings.
Adding ちょっと softens the meaning to 'fool around a little bit' or 'tinker lightly.'
パソコンをちょっといじってみたけど、直らなかった。
I fooled around with the computer a bit, but couldn't fix it.
遊ぶ (asobu) means 'to play' in a general sense, but can also mean 'to fool around' sexually or to waste time. ふざける (fuzakeru) is specifically for silly, joking behavior. Using 遊ぶ when you mean silly play can sound like you're talking about dating or slacking off.
子供たちがふざけている。
The kids are fooling around (being silly).
子供たちが遊んでいる。
The kids are playing (normal play).
ふざける is the default for 'fooling around' in a silly way. おどける implies more deliberate clowning or making funny faces. ふざける can also be used in negative commands (ふざけるな！), while おどける is rarely used that way.
He was fooling around playing games instead of going to school.