Reverse Dictionary: MUMBLE

ADJECTIVES
GAVELLOUS mumbling, lisping, indistinct → 1903 Sc.
MOWY-MOUTHED characterizing speech that is mumbling, rambling, evasive → 1936 Amer. dial.
MUMBLY inclined to mumble → 1849
TONGUE-TACKIT mumbling, indistinct in speech, inarticulate → 1923 Sc.

NOUNS
FUMBLE confused utterance, a mumbling → 1647 obs.
HUMMEL-BUMMEL an imitation of mumbling → 1537 obs.
MUMBLEMENT a mumbling; a mumbled or muttered utterance → 1595
MUSSITATION a mumbling, a grumbling, a muttering, a murmuring; a speaking in a low tone → 1649

VERBS
DRUMBLE to mumble, mutter, or talk in a sleepy, monotonous manner → 1579 obs. exc. Sc. & Eng. dial.
EAT ONE’S WORDS to mumble, to speak incoherently → 1968 Amer. dial.
FLUMMER to mumble, to repeat indistinctly → 1533 obs.
FUMFER FUMPER PHUMPHER to avoid making a decision and mumble, to speak inarticulately or indistinctly; to falter in one’s speech → 1954 US sl.
HEE-HAW ► HEM AND HAW ► HEM-HAW to mumble, to mutter, to be indecisive → L15 sl.
HUM AND HAW to mumble, to mutter, to be indecisive → 1632
MAFFLE to mumble; to speak indistinctly, to stammer → 1387 obs. exc. Eng. dial.
MAMBLE to mumble, to mutter; to chatter → c1275 obs.
MAMMOCK to mumble → 1905 Eng. dial. (Bk.)
MAUNDER to mumble; to grumble; to threaten in an undertone → 1691 Sc. & Eng. dial.
MIFFLE AFTER to mumble about or concerning → 1893 Eng. dial.
MUM to mumble, to mutter, to whisper; to speak softly or indistinctly → c1390
MUMP to mumble, to mutter; to utter indistinctly or inarticulately, as if with toothless gums → a1586
MURMELL to mutter, to mumble → 1546 Sc. obs.
NATTLE to mumble in a toothless fashion → 1825 Sc.
PALTER to mumble, to mutter, to babble; to speak indistinctly or idly → 1538 obs.
RABBIT ON to mumble, to grumble; to chatter; to complain → 1941 sl.
SUP UP to mumble, to mutter; to utter indistinctly → 1581 obs.
THRUM to speak or read in a monotonous tone; to mumble → 1774
WABBLE to mumble in a halting or indistinct way; to stammer out → 1920 Sc.
YAFFLE to mumble, as a toothless person; to talk indistinctly → 1847 Eng. dial.