The phrase "wert behind" can have many antonyms depending on context. If it refers to being late or delayed, possible antonyms could be "on time," "ahead," "arrived," or "early." If it refers to being inferior or less advanced, antonyms could be "ahead," "superior," "advanced," or "leading." If it refers to being on the losing side of a competition, antonyms could be "winning," "victorious," "triumphant," or "dominant." In any case, the antonyms for "wert behind" revolve around the idea of being ahead or above the current situation, whether it be in terms of time, progress, or success.