deaf and dumb

from the GNU version of the Collaborative International Dictionary of English.

• adjective both deaf and unable to speak; without the sense of hearing or the faculty of speech. Same as deaf-mute.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• adjective Being deaf and not knowing how to speak. Usually physically able to speak.
• noun Cockney rhyming slang bum (behind, bottom).