Moist means slightly wet in a soft, even way — wet enough to feel, nowhere near dripping. A moist slice of cake, moist soil in a pot, eyes going moist at the end of the film.
Baking is where the word does its best work: a moist sponge, keep the chicken moist, moist crumbs left on the knife. Gardeners want moist compost and never soggy compost; air turns moist before rain. The family around it is moisture, moisten, moisturiser. Compare damp, which leans negative — damp socks, a damp cellar — while moist about food is straight praise. One warning nobody puts in the textbooks: a great many English speakers dislike the sound of moist, and it sits near the top of 'most hated word' lists, so you will hear people swerve to damp or juicy to avoid saying it.
1adjectivemoistSlightly wet, in a soft and even way.
“The cake was still moist three days later.”
Patternmoist + noun (cake, soil, air) · keep sth moist · a moist crumb · moisture
synonyms: damp
2adjectiveeyesOf eyes: beginning to fill with tears.
“His eyes went moist when the letter was read out.”
Also accepted in games: damp
MOIST → a little MOISTure left in the cake
A good cake is moist: soft, with a little moisture left inside it, never dry.
hooks ontomoisture
Moist arrived through Middle English from Anglo-Norman and Old French moiste, 'damp, moist, wet'. Where French found it is not settled: it may be a blend of Latin mūcidus, 'mouldy, musty', with a later derivative of mustum, unfermented grape juice. Cake, mould and wine, tangled in one uncertain knot.
Latin
mūcidus — mouldy, musty
Old French
moiste
Middle French
moiste
Anglo-Norman
moist
Middle English
moist
English, today
moist
Built from
The adjective is derived from Middle English moist, moistemoost, most, moste, moyst, moyste, from Anglo-Norman moist, moiste, moste, Middle French moiste, and Old French moiste, muste (“damp, moist, wet”) (modern French moite); further etymology uncertain, perhaps a blend of a Latin - variant of Latin mūcidus (“mouldy, musty”) + a Late Latin derivative of Latin mustum (“unfermented or partially fermented grape juice or wine, must”). The noun is derived from the adjective.
Etymology from Wiktionary, CC BY-SA