Simple past tense and past participle of benumb.(verb)
Lacking sensation; numb(adjective)
Lacking interest; dulled(adjective)
Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "benumbed" in a sentence
"Nor are narcotics -- from narkosis, Greek for "benumbed" -- necessarily all about nodding."
"King responded to the salute from Obama with a kind of benumbed indifference, although later in the show he expressed oddly unctuous gratitude to fellow TV talker "Dr. Phil" McGraw, who popped into the studio for a folksy bye-bye."
"Besides, they were snarling all the time, and his benumbed and drowsy senses no longer took note of changing pitch and intensity."