suffocate, suffocates, suffocated 1. To deprive someone of air or to prevent someone from breathing, or to be unable to breathe. 2. To impair respiration; to smother, to asphyxiate. 3. To die from lack of air or to kill someone by stopping him/her from breathing. 4. To feel uncomfortable or to make someone feel uncomfortable through excessive heat ... Found on http://www.wordinfo.info/words/index/info/view_unit/2062/