"Had to" is a common phrase used to express necessity or obligation. However, there are several alternatives that can be used instead of "had to," which can add variety to one's language and make the statement more interesting. Some synonyms for "had to" include "needed to," "was required to," "had a duty to," "was compelled to," "had no choice but to," "had an obligation to," "had a responsibility to," "could not avoid," and "was forced to." Using more diverse language can enable one to express their thoughts and ideas with greater precision and clarity.