ensure

When you ensure that something will happen, you guarantee it. All that homework will ensure that you have no time for fun this afternoon!

Ensure comes from the Old French en- "make" plus seur "sure," and that is exactly what it means today - "to make sure or certain, to guarantee." If you ensure success or someone's safety, you are guaranteeing it. Make sure you can really come through with something before you ensure it!

Definitions of ensure
1

v make certain of

“This nest egg will ensure a nice retirement for us”
Synonyms:
assure, guarantee, insure, secure
guarantee, vouch
give surety or assume responsibility
Types:
doom
make certain of the failure or destruction of
make
assure the success of

v be careful or certain to do something; make certain of something

Synonyms:
ascertain, assure, check, control, insure, see, see to it
check, check off, mark, mark off, tick, tick off
put a check mark on or near or next to
check
verify by consulting a source or authority
ascertain, check, determine, find out, learn, see, watch
find out, learn, or determine with certainty, usually by making an inquiry or other effort
control, verify
check or regulate (a scientific experiment) by conducting a parallel experiment or comparing with another standard
Types:
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proof, proofread
read for errors
control
verify by using a duplicate register for comparison
double-check
check once more to be absolutely sure
cross-check
check out conflicting sources; crosscheck facts, for example
cinch
make sure of
card
ask someone for identification to determine whether he or she is old enough to consume liquor
spot-check
pick out random samples for examination in order to ensure high quality
cover
maintain a check on; especially by patrolling
Type of:
verify
confirm the truth of