Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
sketchily is an adverb meaning "in a sketchy incomplete manner". It carries one recorded sense.
in a sketchy incomplete manner
“he explained sketchily”
“the dishes were only sketchily washed”
Definitions, synonyms and semantic relations for sketchily come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.