Vouchsafement is a formal and rarely used word that means to grant or give something, often in a condescending or patronizing manner. It can be difficult to find suitable synonyms for this word, but some possible alternatives include bestowal, gift, concession, conferral, endowment, imparting, and conferment. These words all convey a similar sense of allowing or granting something, without the implied sense of superiority or condescension that sometimes comes with vouchsafement. Other possible synonyms may include granting, dispensation, allotment, or permission. In general, it's important to choose a synonym that conveys the intended meaning of the original word while also fitting appropriately into the surrounding sentence or context.