From The Collaborative International Dictionary of English v.0.44 [gcide]:
From WordNet (r) 2.0 [wn]:
From Moby Thesaurus II by Grady Ward, 1.0 [moby-thes]:
66 Moby Thesaurus words for "authenticate": OK, accept, accredit, affirm, amen, approve, attest, authorize, autograph, avouch, back, back up, bear out, bolster, buttress, certify, circumstantiate, confirm, corroborate, cosign, countersign, demonstrate, document, endorse, fortify, give permission, give the go-ahead, give the imprimatur, give thumbs up, initial, justify, notarize, pass, pass on, pass upon, permit, probate, prove, ratify, reinforce, rubber stamp, sanction, say amen to, seal, second, sign, sign and seal, strengthen, subscribe to, substantiate, support, sustain, swear and affirm, swear to, test, try, undergird, undersign, underwrite, uphold, validate, verify, visa, vise, vouch for, warrant
Define.com is a registered nonprofit corporation dedicated solely to the global public interest and the advancement of humanity. It belongs to all of us who have a desire to promote electronic democracy, science, creativity, imagination, reason, critical thinking, peace, race and gender equality, civil rights, equal access to education, personal liberty, free speech, animal rights, compassionate and nonviolent parenting, social and economic justice, global monetary reform, Secular Humanism, cognitive liberty and a permanent cessation of The War on Drugs.
Let's see what we can do if we put our heads together.0