SPEECHLESS

adj. 1 mute, dumb, voiceless He was speechless and in shock for two days following the accident They claim to speak for animals who are, of course, speechless themselves. 2 dumbfounded or dumfounded, dumbstruck or dumbstricken, wordless, struck dumb, tongue-tied, thunderstruck, shocked, dazed, inarticulate, paralysed, nonplussed, Slang Brit gobsmacked He was speechless with fury to find his car missing