| v. t. | 1. | |
| 1. | To make sure or secure; | |
| 2. | 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; | |
| v. i. | 1. | To underwrite; to make insurance; |
| Verb | 1. | insure - be careful or certain to do something; make certain of something; "He verified that the valves were closed"; "See that the curtains are closed"; "control the quality of the product" |
| 2. | insure - make certain of; "This nest egg will ensure a nice retirement for us"; "Preparation will guarantee success!" | |
| 3. | insure - protect by insurance; "The insurance won't cover this" Synonyms: underwrite, cover | |
| 4. | insure - take out insurance for |