Crossword solverSynonyms for validate13 crossword answers for “validate” (8), sorted by letter count.How many letters?All13536372921011111515 letters 3avoidannulquash6 letters 3co-sign(2-4)cosignratify7 letters 2probatenullify9 letters 2formaliseformalize10 letters 1invalidate11 letters 1corroborate15 letters 1circumstantiate