Roget's Thesaurus: Entry 583 (Imperfect Speech)

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#583. [Imperfect Speech.] Stammering. -- N. inarticulateness; stammering &c. v.; hesitation &c. v.; impediment in one's speech; titubancy[obs], traulism|; whisper &c. (faint sound) 405; lisp, drawl, tardiloquence[obs]; nasal tone, nasal accent; twang; falsetto &c. (want of voice) 581; broken voice, broken accents, broken sentences.

brogue &c. 563; slip of the tongue, lapsus linouae [Lat].

V. stammer, stutter, hesitate, falter, hammer; balbutiate|, balbucinate|, haw, hum and haw, be unable to put two words together.

mumble, mutter; maud|, mauder[obs]; whisper &c. 405; mince, lisp; jabber, gibber; sputter, splutter; muffle, mump[obs]; drawl, mouth; croak; speak thick, speak through the nose; snuffle, clip one's words; murder the language, murder the King's English, murder the Queen's English; mispronounce, missay[obs].

Adj. stammering &c. v.; inarticulate, guttural, nasal; tremulous; affected.

Adv. sotto voce &c. (faintly) 405[Lat].