Syllable division and stress derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
top-heavy is an adjective meaning "unstable by being overloaded at the top". It carries one recorded sense.
unstable by being overloaded at the top
Definitions, synonyms and semantic relations for top-heavy come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.