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

See also: surprised

• indefatigability
• indefatigable
• indefatigableness
• indefatigably
• indefeasible
• indefectible
• indefensible
• indefensibly
• indefinable
• indefinably
• indefinite
• indefinite article
• indefinite integral
• indefinite quantity
• indefinitely
• indefiniteness
• indefinity
• indehiscence
• indehiscent
• indelibility
• indelible
• indelible ink
• indelibly
• indelicacy
• indelicate