entries → 偶然
TSUMUGU · TOCFL B2 (est.) · 詞
偶然 word · TOCFL B2 (est.)
偶然 ＝ 偶 ＋ 然
ㄡˇ ㄖㄢˊ · ǒurán
adjective/adverb — by chance, accidental, unexpected; occasionally

字源 FORM — what the parts do

偶by chance, now and then (偶爾)ǒu
然so, in such a manner (然後)rán
偶然，偶爾的偶，然後的然。
關 · Related
必然bìráninevitable — the same 然, the opposite of chance偶爾ǒuěronce in a while — the same 偶, the frequency sense