"mousey" in the adjective sense
1. mousy, mousey
infested with mice
2. mousy, mousey, mouse-colored, mouselike
of something having a drab pale brown color resembling a mouse
"a mousy brownish-grey color"
"mousy hair"
"mouse-colored hair"
3. mousy, mousey
quiet and timid and ineffectual
Source: WordNet® (An amazing lexical database of English)
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