adj., -i·er, -i·est.

1. Stale or moldy in odor or taste.
2. 1. Hackneyed or trite; dull.
   2. Out of date; antiquated.
   3. Out of use or practice; rusty.

[Alteration of obsolete moisty, from MOIST.]

mustily must'i·ly adv.
mustiness must'i·ness n.

adjective

1. Smelling of mildew or decay: frowzy, fusty, moldy, putrid, rancid, rank², rotten. See smells/good smells/bad smells/smell.
2. Without freshness or appeal because of overuse: banal, bromidic, clichéd, commonplace, corny, hackneyed, overused, overworked, platitudinal, platitudinous, shopworn, stale, stereotyped, stereotypic, stereotypical, threadbare, timeworn, tired, trite, warmed-over, well-worn, worn-out. See excite/bore/interest, usual/unusual.

adj

Definition: stuffy, aged
Antonyms: clean, clear, fresh, new, sweet-smelling

adj

Definition: worn-out, cliched
Antonyms: fresh, modern, new, unused

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IN BRIEF: Smelling of dampness or dustiness. Also: Outmoded.

The abandoned mansion smelled musty because of disuse.

Dansk (Danish)
adj. - muggen, skimlet, forældet, antikveret

Nederlands (Dutch)
beschimmeld, muf, verouderd

Français (French)
adj. - qui sent le renfermé/le moisi, (fig) vieux jeu

Deutsch (German)
adj. - muffig, verstaubt

Ελληνική (Greek)
adj. - μουχλιασμένος, μπαγιάτικος, που μυρίζει μούχλα/κλεισούρα

Italiano (Italian)
ammuffito

Português (Portuguese)
adj. - mofado, antiquado, apático

Русский (Russian)
заплесневелый, косный

Español (Spanish)
adj. - mohoso, que huele a cerrado o a humedad, anticuado, pasado de moda

Svenska (Swedish)
adj. - unken, mossig

中文（简体） (Chinese (Simplified))
发霉的, 落伍的, 霉臭的

中文（繁體） (Chinese (Traditional))
adj. - 發黴的, 落伍的, 黴臭的

한국어 (Korean)
adj. - 곰팡이가 난, 무기력한

日本語 (Japanese)
adj. - かび臭い, 陳腐な, 無気力な, かびた

العربيه (Arabic)
‏(صفه) متعفن‏

עברית (Hebrew)
adj. - ‮מעופש, עבש, מיושן‬

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