Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
stoppable is an adjective meaning "capable of being stopped". It carries one recorded sense.
capable of being stopped
“if we pick up our pace he may be stoppable”
Definitions, synonyms and semantic relations for stoppable come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.