1. (v. t.) To make sure or secure; as, to insure safety to any one.

2. (v. t.) Specifically, to secure against a loss by a contingent event, on certain stipulated conditions, or at a given rate or premium; to give or to take an insurance on or for; as, a merchant insures his ship or its cargo, or both, against the dangers of the sea; goods and buildings are insured against fire or water; persons are insured against sickness, accident, or death; and sometimes hazardous debts are insured.

3. (v. i.) To underwrite; to make insurance; as, a company insures at three per cent.

arm armor 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 endorse ensure establish fence fend find out fix get at guarantee guaranty guard harbor haven 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 reassure register remove all doubt ride shotgun for safeguard screen secure see that see to it set at rest settle shelter shield shroud sign sign for sort out sponsor stand behind stand up for subscribe to undersign underwrite warrant