Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
tolerably is an adverb meaning "in an acceptable (but not outstanding) manner". It carries one recorded sense.
in an acceptable (but not outstanding) manner
“she plays tennis tolerably”
Definitions, synonyms and semantic relations for tolerably come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.