1. (v. t.) To make sure. See Insure.

2. (v. t.) To betroth.

arm armor arrange ascertain assure attest back be sponsor for bless bond certify champion cinch clear up clinch cloak compass about confirm copyright countersecure cover cushion decide defend determine dismiss all doubt effect endorse establish fence fend find out fix get at guarantee guaranty guard harbor haven insure keep keep from harm make certain make no doubt make no mistake make safe make sure make sure of nail down nestle patent police protect provide reassure register remove all doubt ride shotgun for safeguard screen secure see that see to it set at rest set out settle shelter shield shroud sign sign for sort out sponsor stand behind stand up for subscribe to undersign underwrite warrant