(as) timid as a mouse

Very nervous, shy, or fearful. I can't believe John actually had the temerity to demand a raise. He's always been timid as a mouse! I love singing, but it's hard to pursue it professionally when you become as timid as a mouse up on stage. Because Molly's as timid as a mouse, she froze when she realized she'd have to speak in front of the entire class.

(as) timid as a rabbit

Very nervous, shy, or fearful. I can't believe John actually had the temerity to demand a raise. He's always been timid as a rabbit! I love singing, but it's hard to pursue it professionally when you become as timid as a rabbit up on stage. Because Molly's as timid as a rabbit, she froze when she realized she'd have to speak in front of the entire class.

be (as) timid as a mouse

To be very nervous, shy, or fearful. I can't believe John actually had the temerity to demand a raise. He's always been timid as a mouse! I love singing, but it's hard to pursue it professionally when you're timid as a mouse on the stage. Because Molly's as timid as a mouse, she froze when she realized she'd have to speak in front of the entire class.

be (as) timid as a rabbit

To be very nervous, shy, or fearful. I can't believe John actually had the temerity to demand a raise. He's always been timid as a rabbit! I love singing, but it's hard to pursue it professionally when you're timid as a rabbit on the stage. Because Molly's as timid as a rabbit, she froze when she realized she'd have to speak in front of the entire class.