What a Bore! is an expression used to describe someone or something that is dull, tedious, and uninteresting. The crossword solutions for this term are YAWN (4 letters), YAWNER (6 letters), and SNOOZE (6 letters). YAWN is a verb meaning to open one's mouth wide and take a deep breath, usually due to tiredness or boredom. A YAWNER is a person who yawns often, and SNOOZE is a noun meaning a short period of light sleep. All three words are related to the idea of being bored and uninterested.