せる · させる
- auxiliary verb, ichidan verb, ～せる connects to -nai stem of 五段 verbs and to サ変 as さ～せる; ～させる connects to -nai stem of 一段 and カ変 verbs and to サ変 as せ～させる auxiliary verb indicating the causative voice
- auxiliary verb indicating the granting of permission to do something
- honorific, as 〜(さ)せられる, あら〜せられる, 〜(さ)せ給う, etc. auxiliary verb used as an honorific for others' actions