Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
benumbed is an adjective meaning "lacking sensation". It carries 2 recorded senses.
having lost or been caused to lose interest because of overexposure
“the mind of the audience is becoming dulled”
“the benumbed intellectual faculties can no longer respond”
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for benumbed come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.