| 良い | いい / よい | ii, yoi | good | |
| いいえ | | iie | no | |
| 言う | いう | iu | to say, to tell | |
| 家 | いえ | ie | house, home | |
| 行く | いく | iku | to go | |
| いくつ | | ikutsu | how many, how old | |
| いくら | | ikura | how much | |
| 池 | いけ | ike | pond | |
| 医者 | いしゃ | isha | doctor | |
| 椅子 | いす | isu | chair | |
| 忙しい | いそがしい | isogashii | to be busy | |
| 痛い | いたい | itai | to be painful | |
| 一 | いち | ichi | one | |
| 一日 | いちにち | ichinichi | one day | |
| 一番 | いちばん | ichiban | No. 1, the best, the first | |
| いつ | | itsu | when | |
| 五日 | いつか | itsuka | the 5th day of the month, 5 days | |
| 一緒 | いっしょ | issho | together | |
| 五つ | いつつ | itsutsu | five | |
| いつも | | itsumo | always | |
| 今 | いま | ima | now | |
| 意味 | いみ | imi | meaning | |
| 妹 | いもうと | imouto | someone’s younger sister | |
| いや | | iya | not likable, unpleasant | |
| 入口 | いりぐち | iriguchi | entrance | |
| いる | | iru | need, must have, be required | |
| いる | | iru | to exist | |
| 入れる | いれる | ireru | to insert, to put in | |
| 色 | いろ | iro | color | |
| 色々 | いろいろ | iroiro | various | |