The term CHEERIOS COMPETITOR can be solved by the following crossword solutions: OATS (4 letters), OAT (3 letters), BEE (3 letters), OATY (4 letters), OATIER (6 letters), and OATEN (5 letters). All of these solutions refer to different types of OATS, which are a type of cereal grain. OATS are a popular breakfast food and are often used in baking. Cheerios is a brand of OAT-based cereal, so these solutions could be referring to other brands of OAT-based cereals that compete with Cheerios.