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 ;