The phrase "destined to" refers to something that is meant to happen or fated to occur. There are several synonyms for "destined to" that can be used interchangeably to convey the same sense of pre-ordained inevitability. These include predetermined, predestined, predetermined, foreordained, ordained, prearranged, and meant to be. Depending on the context, other synonyms like inescapable, inevitable, unavoidable, and certain can also be used to convey a similar sense of fate or predetermination. Ultimately, regardless of the exact wording used, the idea of something being "destined to" happen implies a sense of inevitability that is difficult to escape or change.