Given to loud, indiscreet talk; loud, noisy; (now) esp. vociferous, indiscreet, or outspoken.

figurative. Violent, truculent; given to blustering.

Loud-mouthed; noisy.

Making or given to making a lot of noise; clamorous, turbulent.

= obstreperous, adj. 1. Obsolete. rare.

Combinations with present and past participles of verbs denoting or implying the production of sound, e.g. loud-acclaiming, loud-bellowing, loud-lau…

Chiefly Welsh English. Inclined to talk a lot, especially in a rude, insolent, or belligerent way; loud-mouthed. Cf. mouthy, adj. 1a.