insure
/in-ˈshu̇r/
verb
to provide or obtain insurance on or for
to make certain especially by taking necessary measures and precautions
to contract to give or take insurance
ensure insure assure secure mean to make a thing or person sure. ensure insure, and assure are interchangeable in many contexts where they indicate the making certain or inevitable of an outcome, but ensure may imply a virtual guarantee , while insure sometimes stresses the taking of necessary measures beforehand
phrasal verb
to make (something bad) less likely to happen usually by planning and preparing
to protect (someone) from (something bad)
Doctors recommend exercising to insure against health problems.
verb
to insure oneself; especially : to practice self-insurance