Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
sideway is an adverb meaning "with one side forward or to the front". It carries 3 recorded senses.
toward one side
“the car slipped sideways into the ditch”
“leaning sideways”
“a figure moving sidewise in the shadows”
Definitions, synonyms and semantic relations for sideway come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.