1 synonym for Garantieren

guarantees, ensures, secures, certifies, affirms, confirms, pledges, promises, warrants, vouches, attests, avows, asserts, declares, maintains, upholds, supports, backs, endorses, verifies, substantiates, corroborates, validates, ratifies, authenticates, testifies, swears, avers, asseverates, insures, safeguards, protects, defends, shields, preserves, conserves, sustains, perpetuates, keeps, bolsters, reinforces, fortifies, strengthens, underpins, buttresses, props [x]