憫れ[aware] pity
哀憫[aimin] pity
不憫[fubin] pity
憐憫[renbin] pity

憫然[binzen] pitiable
憫察[binsatsu] taking pity upon
憫笑[binshou] smiling with pity
自己憐憫[jikorenbin] self-pity

クスクス笑う[kusukusuwarau] to giggle
けらけら笑う[kerakerawarau] to cackle
げらげら笑う[geragerawarau] to guffaw
一笑[isshou] laugh
一笑に付す[isshounifusu] to laugh (someone) down

一顰一笑[ippinisshou] (a) mood
可笑しい[okashii] funny
含み笑い[fukumiwarai] suppressed laugh
嬉笑[kishou] happy laughter
戯笑[gishou] playful laughter