Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
suffocative is an adjective meaning "causing difficulty in breathing especially through lack of fresh air and presence of heat". It carries one recorded sense.
causing difficulty in breathing especially through lack of fresh air and presence of heat
“the choking June dust”
“the smothering soft voices”
“smothering heat”
“the room was suffocating--hot and airless”
Definitions, synonyms and semantic relations for suffocative come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.