The amount that will fit in a mouth. / (slang) Quite a bit. / Something difficult to pronounce or say. / A tirade of abusive language.

Bombastic or awkward.

present participle of mouth

The act of forming a shape with the mouth, especially as part of sign language. / Ranting; passionate speech devoid of meaning.

plural of mouthful

plural of mouthing

(obsolete) Talkative; eager to speak. / With the mouth open. / Gaping in surprise, wonder or astonishment.

prone to speaking evasively, indirectly, or duplicitously; not forthright

simple past tense and past participle of mouth off

(informal) Regularly using vulgar language, especially strong profanities.