"Didst the trick" is an idiomatic expression that means that something had worked or been effective in achieving a goal. To find antonyms for this phrase, we would need to look for words that convey the opposite meaning of success or effectiveness. Some options may include "failed," "unsuccessful," "ineffective," "unproductive," or "unsuccessful." These words all show the opposite of doing the trick or being effective. Using these antonyms can help to provide a clearer and more precise description of a situation where something did not have the intended result.