confirm

When you need to make sure before you leave that you have a reservation, you often call ahead to confirm, that is, to make sure that your tickets or space are set aside for you.

The firm in confirm should give you a clue as to the word's meaning: to shore up or verify something. When you make sure something is set, or firm, you confirm it. The word comes from the Latin con- "together, altogether," and firmāre "make firm," so confirm originally meant roughly "to make (something) altogether firm."

Primary Meanings of confirm

1.
v
strengthen or make more firm
2.
v
support a person for a position
3.
v
administer the rite of confirmation to
Full Definitions of confirm
1

v strengthen or make more firm

“The witnesses confirmed the victim's account”
Synonyms:
reassert
Types:
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maintain, uphold
support against an opponent
justify, warrant
show to be reasonable or provide adequate ground for
verify
attach or append a legal verification to (a pleading or petition)
corroborate, validate
give evidence for
reconfirm
confirm again
justify, vindicate
show to be right by providing justification or proof
circumstantiate
give circumstantial evidence for
Type of:
affirm
say yes to

v make more firm

Confirm thy soul in self-control!”
Type of:
beef up, fortify, strengthen
make strong or stronger

v establish or strengthen as with new evidence or facts

“his story confirmed my doubts”
Synonyms:
affirm, corroborate, substantiate, support, sustain
Antonyms:
contradict, negate
prove negative; show to be false
Types:
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hide 14 types...
back, back up
establish as valid or genuine
vouch
give supporting evidence
verify
confirm the truth of
demonstrate, establish, prove, shew, show
establish the validity of something, as by an example, explanation or experiment
document
support or supply with references
validate
prove valid; show or confirm the validity of something
check, check off, mark, mark off, tick, tick off
put a check mark on or near or next to
ascertain, assure, check, control, ensure, insure, see, see to it
be careful or certain to do something; make certain of something
check
verify by consulting a source or authority
prove oneself
show one's ability or courage
prove
prove formally; demonstrate by a mathematical, formal proof
source
specify the origin of
contradict, negate
prove negative; show to be false
stultify
prove to be of unsound mind or demonstrate someone's incompetence
2

v support a person for a position

“The Senate confirmed the President's candidate for Secretary of Defense”
Type of:
O.K., approve, okay, sanction
give sanction to
3

v administer the rite of confirmation to

“the children were confirmed in their mother's faith”
Type of:
covenant
enter into a covenant

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