笑う(P);嗤う(rK);咲う(rK);哂う(sK) [わらう] /(v5u,vi) (1) to laugh/(v5u,vi) (2) to smile/(v5u,vi) (3) (esp. 嗤う) to sneer/to ridicule/(v5u,vi) (4) (as 笑ってしまう or 笑っちゃう) to be dumbfounded/to be flabbergasted/(P)/EntL1351360/