affirm

To affirm something is to give it a big "YES" or to confirm that it is true.

The verb affirm means to answer positively, but it has a more weighty meaning in legal circles. People are asked to swear an oath or affirm that they will tell the truth in a court of law. Lawyers may ask people to affirm facts, and judges may affirm rulings. In these cases, affirm means to verify or attest to the validity of something.

Definitions of affirm
1

v declare or affirm solemnly and formally as true

Synonyms:
assert, aver, avow, swan, swear, verify
Types:
show 6 types...
hide 6 types...
hold
assert or affirm
claim, take
lay claim to; as of an idea
attest
authenticate, affirm to be true, genuine, or correct, as in an official capacity
declare
state firmly
protest
affirm or avow formally or solemnly
assure, tell
inform positively and with certainty and confidence
Type of:
declare
state emphatically and authoritatively

v say yes to

Types:
show 16 types...
hide 16 types...
claim
assert or affirm strongly; state to be true or existing
reaffirm
affirm once again
confirm, reassert
strengthen or make more firm
defend, maintain
state or assert
pretend, profess
state insincerely
contend, postulate
maintain or assert
make out
try to establish
purport
have the often specious appearance of being, intending, or claiming
profess
practice as a profession, teach, or claim to be knowledgeable about
charge
make an accusatory claim
maintain, uphold
support against an opponent
justify, warrant
show to be reasonable or provide adequate ground for
vindicate
maintain, uphold, or defend
verify
attach or append a legal verification to (a pleading or petition)
corroborate, validate
give evidence for
reconfirm
confirm again

v establish or strengthen as with new evidence or facts

Synonyms:
confirm, corroborate, substantiate, support, sustain
Antonyms:
contradict, negate
prove negative; show to be false
Types:
show 14 types...
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

Sign up, it's free!

Whether you're a student, an educator, or a lifelong learner, Vocabulary.com can put you on the path to systematic vocabulary improvement.