- 再び【ふたたび】 - again, once more, a second time 
- 再会【さいかい】 - meeting again, reunion 
- 再生【さいせい】 - restoration to life, coming to life again, resuscitation, regeneration, reformation, rehabilitation, recycling, reclamation, recovery, playback, regeneration (of video or sound), views (of an online video), regeneration (of lost or damage tissue), regrowth, rebirth, reincarnation, recall (memory), retrieval 
- 再開【さいかい】 - reopening, resumption, restarting 
- 再現【さいげん】 - reappearance, reemergence, return, revival, reproduction, reenactment, recreation 
- 再婚【さいこん】 - second marriage, remarriage 
- 再建【さいけん】 - rebuilding, reconstruction, rehabilitation, protoform reconstruction 
- 再三【さいさん】 - again and again, repeatedly 
- 再度【さいど】 - a second time, again, once more, twice 
- 再起【さいき】 - comeback, recovery, restoration, rally 
- 再来年【さらいねん】 - year after next 
- 再編【さいへん】 - reorganization, reorganisation, reshuffle 
- 再発【さいはつ】 - return, relapse, recurrence 
- 再選【さいせん】 - re-election 
- 再検討【さいけんとう】 - re-examination, review, reconsideration, reappraisal 
- 再開発【さいかいはつ】 - redevelopment 
- 再審【さいしん】 - retrial, reopening of a case, review, reexamination 
- 再来【さいらい】 - return, coming back, second coming (e.g. of Christ), second advent, reincarnation 
- 再燃【さいねん】 - recurrence, revival, resuscitation 
- 再販【さいはん】 - resale