1. resembling a mouse in appearance, especially having dull grayish-brown hair
2. timid, shy, or quiet in manner

Examples

• Her mousy brown hair hung limply around her shoulders.
• The mousy librarian rarely spoke above a whisper.
• He had a mousy appearance that made him blend into crowds.
• She was tired of being seen as mousy and decided to speak up.
• The mousy color of the curtains made the room look dreary.
• Despite her mousy demeanor, she was actually quite intelligent.