"Doest number" is not a commonly used phrase in modern English. However, if we were to consider antonyms for "number", we could think of words such as "discard", "eliminate", or "subtract". These words suggest the opposite of quantifying or enumerating something. They imply removing or reducing the amount or quantity of something instead. It is important to note that the choice of antonym for a specific word may depend on the context in which it is used. Therefore, it is always useful to consider the meaning and usage of a word before determining its antonyms.