晴朗[seirou] clear
不明朗[fumeirou] gloominess
明朗[meirou] bright
朗らか[hogaraka] brightness
朗詠[rouei] recitation (of Japanese or Chinese poem)

朗読[roudoku] reading aloud
朗報[rouhou] good news
朗朗[rourou] clear
朗吟[rougin] recitation
朗誦[roushou] recitation

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