mumbler (plural mumblers)
- Agent noun of mumble; one who mumbles.
- 1938, Norman Lindsay, Age of Consent, Sydney: Ure Smith, published 1962, page 91:
- Attending Bradly for company when he went abroad with his painting traps failed to account for itself under the heading of a diversion. Old Mudgy surpassed himself as a scowler and mumbler when engaged in the practice of his art.