| # | Kanji | Kanji Level 4 | |||
| 551 | 欠 | lack; deficit | 1068 | ||
| けってん | 欠点 | ketten | defect, weakness | ||
| けつぼう | 欠乏 | ketsuboo | shortage, insufficiency | ||
| けっかん | 欠陥 | kekkan | defect, fault, deficiency | ||
| けっせき | 欠席 | kesseki | absence, non-attendance | ||
| あくび | 欠伸 | akubı | yawn (yawning and stretching) | ||
| かける | 欠ける | kakeru | to be lacking | ||
| かかせない | 欠かせない | kakasenai | indispensable |