Wiktionary
smotherer
n. agent noun of smother; one who smothers.
WordNet
smotherer
n. a person who stifles or smothers or suppresses; "he is a real conversation stifler"; "I see from all the yawn smotherers that it is time to stop" [syn: stifler]
Usage examples of "smotherer".
The attack came so suddenly Little Ease lost its grip on the window frame and toppled backwards, but its smotherer had too tight a hold on it to let it drop, and hauled it up onto the roof.