- moderately or slightly wet; damp.
- (of the eyes) tearful.
- accompanied by or connected with liquid or moisture.
- (of the air) having high humidity.
Origin of moist
SynonymsSee more synonyms on Thesaurus.com
- slightly damp or wet
- saturated with or suggestive of moisture
Word Origin and History for semi-moist
late 14c., "moist, wet; well-irrigated," from Old French moiste "damp, wet, soaked" (13c., Modern French moite), from Vulgar Latin *muscidus "moldy," also "wet," from Latin mucidus "slimy, moldy, musty," from mucus "slime" (see mucus). Alternative etymology [Diez] is from Latin musteus "fresh, green, new," literally "like new wine," from musteum "new wine" (see must (n.1)). If this wasn't the source, it influenced the form of the other word in Old French. Related: Moistly; moistness.