The word "doest" is an archaic form of the verb "do" used in the second person singular of the present tense. Antonyms for "doest" could include phrases like "don't do," "cease to act," "discontinue," "cease," "stop," or "abstain." These words convey the opposite meaning of "doest" and can be used to give direction to someone to stop performing a particular action. However, it is important to note that "doest" is not commonly used in modern English, and most people would use the word "do" instead. Antonyms for "do" might include words like "undo," "neglect," "ignore," or "omit.