"Time and again" is a phrase that implies repetition. It denotes something that occurs frequently or repeatedly. Synonyms for this phrase include "again and again," "over and over," "repeatedly," "frequently," "regularly," and "often." These words are used to emphasize the frequency of an action while suggesting that it is habitual or customary. Additionally, some other synonyms for "time and again" include "continuously," "persistently," and "incessantly." These synonyms can be used interchangeably to convey the same meaning, but some may be more appropriate depending on the context and tone of the sentence. Overall, these synonyms help to convey the idea of something happening repeatedly or frequently.