the East Asian rainy season (from early June to early/mid-July)
köken: First attested in the mid-Muromachi period. Derivation unclear, likely theories include: * May be cognate with 露 (tsuyu, “dew, dewdrop”), from the way the rainy season causes everything to be covered in drops that may look like dew. However, the pitch accent differs, as 露 (tsuyu) has either an 頭高型 (atamadaka-gata) or 尾高型 (odaka-gata) pattern, while 梅雨 (tsuyu) has a 平板型 (heiban-gata) pattern. *…
köken: First attested in the Sin'gan guhwang chwaryo (新刊救荒撮要 / 신간구황촬요), 1660, as Early Modern Korean ᄆᆡ오 (Yale: moywo), combination of ᄆᆡᆸ (moyp) + suffix -오 (o). After the mid-15th century, ㅸ (ㅸ) changed to ㅗ (o), ㅜ (u) before a vowel other than ㅣ (i). See also 맵다 (maepda) and ㅸ (ㅸ).