The term 'cheesed off' is an informal expression used to describe a feeling of annoyance or frustration. The crossword solutions TEED (4 letters), DISGRUNTLED (11 letters) and IRKED (5 letters) all describe similar feelings of being upset or irritated. TEED is a verb meaning to become angry or annoyed, while DISGRUNTLED is an adjective meaning to be discontented or DISGRUNTLED. IRKED is also an adjective meaning to be irritated or annoyed. All three words can be used to describe the feeling of being 'cheesed off'.