verbs
deprive of oxygen and prevent from breathing
"Othello smothered Desdemona with a pillow"; "The child suffocated herself with a plastic bag that the parents had left on the floor"
impair the respiration of or obstruct the air passage of
"The foul air was slowly suffocating the children"
become stultified, suppressed, or stifled
"He is suffocating--living at home with his aged parents in the small village"
suppress the development, creativity, or imagination of
"His job suffocated him"
be asphyxiated; die from lack of oxygen
"The child suffocated under the pillow"
feel uncomfortable for lack of fresh air
"The room was hot and stuffy and we were suffocating"
is a type of (narrower)
be conscious of a physical, mental, or emotional state
"My cold is gone--I feel fine today"; "She felt tired after the long hike"; "She felt sad after her loss"
struggle for breath; have insufficient oxygen intake
"he swallowed a fishbone and gagged"