tongue-tied

• POS: Adjective

CIDE DICTIONARY

tongue-tied, a. 

•  Destitute of the power of distinct articulation; having an impediment in the speech, esp. when caused by a short frænum.  [1913 Webster]
•  Unable to speak freely, from whatever cause.  [1913 Webster]

  "Love, therefore, and tongue-tied simplicity."  [1913 Webster]

ROGET THESAURUS

tongue-tied

Aphony

N aphony, aphonia, dumbness, obmutescence, absence of voice, want of voice, dysphony, cacoepy, silence, raucity, harsh voice &c, unmusical voice, falsetto, childish treble mute, dummy, aphonous, dumb, mute, deafmute, deaf and dumb, mum, tongue-tied, breathless, tongueless, voiceless, speechless, wordless, mute as a fish, mute as a stockfish, mute as a mackerel, silent, muzzled, inarticulate, inaudible, croaking, raucous, hoarse, husky, dry, hollow, sepulchral, hoarse as a raven, rough, with bated breath, with the finger on the lips, sotto voce, in a low tone, in a cracked voice, in a broken voice, vox faucibus haesit.