The definition of cheesy is something that smells or feels like cheese, or something that is made with poor quality, or something that is corny or foolish.(adjective)
See cheesy in Webster's New World College Dictionary
See cheesy in American Heritage Dictionary 4
adjective chees·i·er, chees·i·est
Origin: Sense 2, possibly from cheesy, showy
Origin: , from cheese3.
Learn more about cheesy