plural of dumb-ass

To feign muteness. / To feign stupidity or ignorance of some knowledge, usually in order to avoid responsibility or gain some advantage.

A person who is very intelligent, but socially dull. / A person who is very intelligent in one limited sphere, but inept in other areas.

(Cockney rhyming slang) bum (behind, bottom).

(now offensive) Deaf and not able to speak.

plural of dumb terminal

plural of dumb blonde

Extremely stupid.

Synonym of dumb pipe

(networking) In the context of mobile network operators, a simple network that, with a high enough bandwidth to transfer bytes between a customer's device and the Internet without the need to prioritize content, can afford to be completely neutral with regard to the services and applications the customer accesses.