tongue tied[adjective]Synonyms: inarticulate, incoherent, maundering, unvocal
Contrasted words: loose-lipped, loose-tongued
[TahlilGaran] English Synonym Dictionary ▲
ˈtongue-tied adjective unable to talk in a relaxed way because you feel nervous or embarrassed:
When adults spoke to her, she became tongue-tied and shy. [TahlilGaran] Dictionary of Contemporary English ▲