Stifling
verb
To interrupt or cut off.
To repress, keep in or hold back.
“The army stifled the rebellion.”
To smother or suffocate.
“The heat was stifling the children.”
noun
The act by which something is stifled.
adjective
That stifles.
“The heat was stifling; it seemed hard to breathe and the exertion of rolling over on the bed seemed too much.”