1. As if struck dumb with astonishment and surprise
   - dumbfounded, dumfounded, flabbergasted, stupefied, thunderstruck, dumbstruck

See also: surprised

• uncurled
• uncurtained
• uncurved
• uncurving
• uncus
• uncut
• undamaged
• undamped
• undatable
• undated
• undaunted
• undead
• undecagon
• undeceive
• undeceived
• undecided
• undecipherable
• undecipherably
• undeciphered
• undeclared
• undecomposable
• undecomposed
• undecorated
• undecylenic acid
• undedicated