"Umpteens" is an informal term used to describe an undetermined or extremely large number of something. Its antonyms, therefore, would be words that describe specific, determinable quantities. Examples include "one," "two," "three," "four," and so on, as well as words like "several," "a few," "many," and "a pack." Rather than describing a vague or overwhelming amount, these words provide a more precise understanding of how much of something is being referred to. By using antonyms of "umpteens," writers and speakers can communicate more clearly and accurately about quantities, ensuring that their audience fully understands the information being conveyed.