合う
あう
to fit, to match
Au (合う) is a godan verb meaning "to fit, to match". Its polite form is 合います (aimasu), its te form is 合って (atte), its past form is 合った (atta), and its negative form is 合わない (awanai).
Godan verbJLPT N4
Au (合う) conjugation quick reference
合う means "to fit, to match". Its main forms are listed below, with links to the grammar pattern behind each form.
Au example sentences
These shoes fit me.
That shirt didn’t match the pants.
Do these glasses suit me?
How to use Au: grammar notes
•Use 合う with the particle が when talking about something that fits or suits you — for example, このドレスが合う (This dress fits me).
•When talking about things that match each other, use と to connect them — for example, シャツとネクタイが合う (The shirt and tie match).
•Don’t confuse 合う with 会う (also read あう), which means “to meet” — they sound the same but have different meanings and kanji.
•JLPT N4 level
Common phrases with Au
気が合う（きがあう）
To get along well (with someone)
目が合う（めがあう）
To make eye contact
話が合う（はなしがあう）
To be on the same wavelength / To have a good conversation
Au (合う) conjugation table
| Form | Japanese | Romaji |
|---|---|---|
| Basic Forms | ||
| Dictionary Form | 合う | au |
| Masu Form | 合います | aimasu |
| Te Form | 合って | atte |
| Past Form | 合った | atta |
| Negative Form | 合わない | awanai |
| Past Negative | 合わなかった | awanakatta |
| Polite Forms | ||
| Polite Present | 合います | aimasu |
| Polite Past | 合いました | aimashita |
| Polite Negative | 合いません | aimasen |
| Polite Past Negative | 合いませんでした | aimasendeshita |
| Advanced Forms | ||
| Potential Form | 合える | aeru |
| Passive Form | 合われる | awareru |
| Causative Form | 合わせる | awaseru |
| Causative Passive | 合わされる | awasareru |
| Volitional Form | 合おう | aou |
| Imperative Form | 合え | ae |
| Conditional Forms | ||
| Conditional (ば) | 合えば | aeba |
| Conditional (たら) | 合ったら | attara |
| Other Forms | ||
| Progressive Form | 合っている | atteiru |
| Desire (たい) | 合いたい | aitai |
| Prohibition | 合うな | auna |