There are several synonyms for the phrase "before marriage" that one can use in different contexts. Some of these include "premarital," "unmarried," "pre-wedding," "pre-nuptial," "pre-bridal," "prior to marriage," "not yet wed," and "engaged but not yet married." Depending on the tone, intent, or audience, one may choose a specific term over others. For instance, "premarital" may connote a more clinical or legalistic tone, while "pre-wedding" may evoke a more positive and celebratory vibe. Ultimately, the choice of synonym will depend on the writer's preference and the target readers' interpretation of the intended meaning.