The term 'Sassy One' can be described by two crossword solutions: SNIP (4 letters) and SMARTMOUTH (10 letters). SNIP is an informal term meaning to cut or trim something, usually in a quick and decisive manner. It can also be used to describe someone who speaks sharply or abruptly. SMARTMOUTH is an informal term for someone who speaks in a rude or disrespectful way, often with the intention of being funny or clever. Both terms are used to describe someone who is bold and outspoken, but in a negative way.