| Word | Reading | Meaning | Level |
|---|
| 自覚 | じかく | self-awareness, realization | N4 |
| 自転車 | じてんしゃ | bicycle | N3 |
| 自信 | じしん | self-confidence | N3 |
| 自由 | じゆう | freedom | N3 |
| 自給 | じきゅう | self-supply | N3 |
| 自粛 | じしゅく | self-restraint | N2 |
| 独自 | どくじ | one's own, independent | N2 |
| 取材の自由 | しゅざいのじゆう | freedom to report | N2 |
| 報道の自由 | ほうどうのじゆう | freedom of the press | N2 |
| 自動 | じどう | automatic | N2 |
| 不自由 | ふじゆう | inconvenience, hardship | N2 |
| 自動化 | じどうか | automation | N1 |
| 自律的 | じりつてき | autonomous, self-sustaining | N1 |
| 自己資本比率 | じこしほんひりつ | capital adequacy ratio | N1 |
| 自国優先 | じこくゆうせん | domestic-first priority | N1 |
| 自己資本 | じこしほん | equity capital, net worth | N1 |
| 自制 | じせい | self-restraint | N1 |
| 自然薯 | じねんじょ | wild mountain yam, jinenjo | N1 |
| 自生 | じせい | growing wild, naturally occurring | N1 |
| 自然林 | しぜんりん | primary old-growth broadleaf forest | N1 |
| 自家抽出 | じかちゅうしゅつ | self-extracting natural broth moisture | N1 |
| 自生地保護 | じせいちほご | conservation of wild natural habitats | N1 |
| 天地自然 | てんちしぜん | the cosmos and wild nature | N1 |
| 自然淘汰 | しぜんとうた | biological survival of fittest strains | N1 |
