| English definition | Japanese (romaji) | Hiragana | Katakana | Kanji |
| ba | ba | ば | ||
| idiot | baka | |||
| because | bakarini | |||
| goblin / monster / apparition | bakemono | |||
| night | ban | |||
| number | bangou | |||
| platform | bansen | |||
| tokoya | barber | |||
| bus | basu | バス | ||
| be | be | べ | ||
| bed | beddo | |||
| lawyer | bengoshi | |||
| study | benkyou | |||
| convenient | benli (na) | |||
| while sticking out one's tongue | berorito | |||
| separate / distinction / exception | betsu | べつ | 別 | |
| separately | betsubetsu ni | |||
| bi | bi | び | ||
| splashing / dabbling | bichabicha | |||
| fine arts | bijutsu | |||
| fine arts | bijutsu | |||
| art museum | bijutsukan | |||
| be surprised / be amazed / be frightened | bikkuri | |||
| bottle | bin | |||
| building | biru | ビル | ||
| bo | bo | ぼ | ||
| mediocre | bon | ぼん | 凡 | |
| pen | bourupen | |||
| bu | bu | ぶ | ||
| Brazil | Burajiru | ブラジル | ||
| hospital | byouin |
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