THESAURUS
lisp
aphonia, artificial voice, assibilate, assibilation, broken speech, broken tones, broken voice, buzz, childish treble, choked voice, cracked voice, croak, crow, drawl, dysarthria, dyslalia, dyslogia, dysphasia, dysphonia, dysphrasia, effervesce, effervescence, effervescing, falsetto, fizz, fizzle, fizzling, frication, frictional rustling, harshness, hawking voice, hiss, hissing, hoarseness, hush, hushing, idioglossia, idiolalia, impairment of speech, lisping, loss of voice, mince, muzzy speech, nasal tone, nasalization, quaver, rhonchus, shake, shush, shushing, sibilance, sibilate, sibilation, siffle, sigmatism, siss, sissing, sizz, sizzle, sizzling, sneeze, sneezing, sniff, sniffle, snore, snort, snuff, snuffle, speech defect, speech impediment, spit, splutter, sputter, squash, squelch, squish, sternutation, stertor, swish, talk incoherently, tremor, twang, wheeze, whish, whistle, whistling, white noise, whiz, whoosh, zip
ROGET THESAURUS
lisp
Stammering
N
stammering, inarticulateness, stammering, hesitation, impediment in one's speech, titubancy, traulism, whisper,
lisp, drawl, tardiloquence, nasal tone, nasal accent, twang, falsetto, broken voice, broken accents, broken sentences, brogue, slip of the tongue, lapsus linouae, stammering, inarticulate, guttural, nasal, tremulous, affected, sotto voce.
VB
stammer, stutter, hesitate, falter, hammer, balbutiate, balbucinate, haw, hum and haw, be unable to put two words together, mumble, mutter, maud, mauder, whisper, mince,
lisp, jabber, gibber, sputter, splutter, muffle, mump, 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.