smiling through tears / joy and sadness; ups and downs

to smile through tears

笑う, 咲う, 嗤う: to laugh; to smile; to bloom; to ripen and open; to come undone; to ridicule or make fun of; (slang) to go wobbly (as in the knees) / 哂う: (rare) to ridicule; to laugh derisively, to sneer

笑い: laugh, smile

bitter/forced/wry smile/laugh

to all be out / elsewhere

a laugh, laughing, laughter / a smile, smiling

Alternative form of (笑): LOL

(literary) laughter

laugh / ridicule, mock, make fun of