Open English Wordnet
Nouns
(n)choking, strangling, strangulation, throttlingthe act of suffocating (someone) by constricting the windpipe“no evidence that the choking was done by the accused”
Adjectives
(s)smothering, suffocating, suffocative, chokingcausing 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”