SPEECHLESS
ADJECTIVES
1447 — TONGUELESS speechless, silent
1529 — TONGUE-TIED speechless, mute, dumb, silent
1586 — DUMB-STRICKEN rendered speechless; dumbstruck
1593 — FORDEAD utterly speechless and still
1594 — WORDLESS speechless, silent
1607 — DUMBED that has been made speechless → chiefly poetic and literary usage
1623 — ELINGUED speechless, dumb → obs.
1775 — ELINGUID speechless, mute
1799 — OBMUTESCENT speechless, remaining mute → literary usage
1854 — UTTERLESS speechless; incapable of utterance
1905 — HAMMERED UP speechless, at a loss for words → Eng. dial. (Bk.)
1935 — GOBSMACKED speechless or lost for words as the result of shock or amazement → UK sl.
1985 — GOBSTRUCK speechless with amazement → UK sl.
NOUNS
1646 — OBMUTESCENCE a being speechless, mute, or dumb, esp. obstinately or wilfully so
2001 — GOBSMACK a shock that renders you speechless → UK sl.
PHRASES
1909 — NOT BE ABLE TO SPEAK A THREEPENNY BIT to be speechless or struck dump → sl.
VERBS
1555 — TONGUE-TIE to render speechless; to restrain from speaking
1598 — UNTONGUE to render speechless; to deprive of the tongue
1627 — UNWORD to make speechless; to deprive of words → obs.
1896 — BECOME SHORT OF THE GREEK to become speechless → Sc.
Lexicophilia 