Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
razor-sharp is an adjective meaning "very clearly delineated". It carries 2 recorded senses.
as sharp as a razor
Definitions, synonyms and semantic relations for razor-sharp come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.