つらい の訳語→ affliction bad difficult discomfort hard harrowing heart-rending lousy pain painful rough sad terror troubled trying uncomfortable worse
苦笑する の訳語→ laugh smile
口ごもる の訳語→ hesitate mumble murmur stammer stop
笑い の訳語→ giggle grim laughter yuk
笑う の訳語→ beam chuckle joke laughingly split tease
薄笑い の訳語→ glee half-grin
grinder grind
