The term 'That Stinks!' can be expressed in a variety of ways, such as BOO (3 letters), UGH (3 letters), ODOR (4 letters), and PHEW (4 letters). BOO is an expression of surprise or disappointment, while UGH is an expression of disgust. ODOR is a noun that refers to a smell, usually unpleasant, and PHEW is an expression of relief. All of these words together express the sentiment of 'That Stinks!', which is a phrase used to express disapproval or disappointment.