甲斐[kai] effect
甲斐甲斐しい[kaigaishii] gallant
甲斐性[kaishou] resourcefulness
甲斐無し[kainashi] worthless
生甲斐[ikigai] something one lives for

年甲斐もない[toshigaimonai] unbecoming
友達甲斐[tomodachigai] true friendship
有斐閣[yuuhikaku] Yuuhikaku (law book publisher)
不甲斐ない[fugainai] disappointing
遣り甲斐[yarigai] being worth doing

然り気ない[sarigenai] nonchalant
然う然う[sousou] so long
然して[soshite] and
亜爾然丁[aruzenchin] Argentina
闇然[anzen] dark

依然[izen] still
依然として[izentoshite] still
一目瞭然[ichimokuryouzen] apparent
隠然[inzen] latent power
果然[kazen] as was expected