Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
mousey is an adjective meaning "infested with mice". It carries 3 recorded senses.
infested with mice
of something having a drab pale brown color resembling a mouse
“a mousy brownish-grey color”
“mousy hair”
“mouse-colored hair”
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for mousey come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.