The phrase "at any time" refers to an event or action that could happen whenever, without any specific timeline or constraint. Synonyms for this phrase include "whenever," "anytime," "ever," "always," "constantly," "continually," "incessantly," "perpetually," "unceasingly," "eternally," and "forevermore." These words all convey the idea of something that can happen at any point, or something that is always possible. By using these synonyms, writers and speakers can add variety to their language and create a greater depth of meaning when discussing topics that involve flexible timeframes or situations that could occur at any given moment.