Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
inexterminable is an adjective meaning "incapable of extermination or extirpation". It carries one recorded sense.
incapable of extermination or extirpation
“some weeds seem inextirpable”
Definitions, synonyms and semantic relations for inexterminable come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.