"Lost to" is a phrase that refers to something that has been defeated or missed out on. However, there are several synonyms that can be used to convey the same meaning. "Lost out on" is another commonly used phrase that means the same thing. Other possible synonyms include "beaten by," "yielded to," "conceded to," and "given up to." Each of these phrases can be used interchangeably with "lost to" depending on the context of the situation. It's always a good idea to have a diverse vocabulary to add more depth and variety to your writing or speech.