Buzzkill is a term used to describe someone or something that spoils the fun or excitement of a situation. The crossword solutions for the term are DRAG (4 letters) and DOWNER (6 letters). DRAG is defined as to pull or draw along with effort or force, while DOWNER is defined as something that causes a feeling of depression or discouragement. Together, these two words can be used to describe someone or something that has a negative effect on a situation, thus making them a buzzkill.