insure

verbs

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"
ascertain, assure, check, control, ensure, insure, see, see to it
make certain of
"This nest egg will ensure a nice retirement for us"; "Preparation will guarantee success!"
assure, ensure, guarantee, insure, secure
protect by insurance
"The insurance won't cover this"
cover, insure, underwrite
is derived from
insurer
is derived from
insurance
take out insurance for
insure
is derived from
insurance
is a type of (narrower)
shield from danger, injury, destruction, or damage
"Weatherbeater protects your roof from the rain"
protect