vouchsafe v grant in a condescending manner Usage(s) He interlards his conversation with phrases out of Dickens or Thackeray, loves to write what he calls "erudite letters" (favorite word: vouchsafe). We peasants from the sticks were counting on him and his uniformed bank guards to vouchsafe the purity and integrity of The $64,000 Question. Writing Home gives the reader a sporting chance at understanding Bennett; it is as close to an autobiography as this gentleman is likely to vouchsafe.