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