Superlative form of cheesy: most cheesy.(adjective)
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Use "cheesiest" in a sentence
"Remaining crews will be facing the exciting Whack Track Challenge, where each team will dance to some of history's "cheesiest" tunes."
"This is the cheesiest out of all those stupid celebrity perfumes/colognes."
"You probably don't want to try these lines out on your Valentine unless he or she is extremely sappy or extremely ironic but go ahead and have a laugh at the classic lines in celebration of the cheesiest holiday there is."