👉 "Umptieth" is a term used in mathematics and logic that refers to the 10th term of an arithmetic sequence. It's often used in problems involving sequences or series, where each term after the first is added by one. For example, if you have a sequence of numbers that starts with 2 and each subsequent term is increased by 1, then the 10th term would be 3 (since it's the 9th term plus 1).