avouch
verb
ə-ˈvau̇ch 
avouched; avouching; avouches
transitive verb
1
: to declare as a matter of fact or as a thing that can be proved : affirm
2
: to vouch for : corroborate
3
a
: to acknowledge (something, such as an act) as one's own
b
: confess, avow
Synonyms
- attest
- authenticate
- certify
- testify (to)
- vouch (for)
- witness
See all Synonyms & Antonyms 
Example Sentences
a note from my doctor avouching that my medical condition did indeed disqualify me from gym class avouched that he had never cheated on his taxes in his life
Word History
Etymology
Middle English, to cite as authority, from Middle French avochier to summon, from Latin advocare — more at advocate
First Known Use
15th century, in the meaning defined at sense 1
avouch
verb
1
as in to affirm
to declare (something) to be true or genuine a note from my doctor avouching that my medical condition did indeed disqualify me from gym class Synonyms & Similar Words
Relevance
- affirm
- certify
- guarantee
- attest
- witness
- vouch (for)
- assert
- authenticate
- avow
- testify (to)
- vow
- aver
- profess
- warrant
2
as in to claim
to state as a fact usually forcefully avouched that he had never cheated on his taxes in his life Synonyms & Similar Words
- claim
- insist
- allege
- assert
- declare
- contend
- affirm
- proclaim
- maintain
- announce
- aver
- purport
- avow
- argue
- protest
- profess
- confirm
- warrant
- put forth
- reason
- defend
- justify
- broadcast
- vindicate
- rationalize
- uphold
- persevere
- reaffirm
- reassert
- support
Antonyms & Near Antonyms
- deny
- gainsay
- disclaim
- abandon
- reject
- disavow
- repudiate
- negative
- negate
- question
- refute
- dispute
- challenge
- disprove
- rebut
- confute
- contradict
- disown
- counter
3
as in to declare
to state clearly and strongly she tends to avouch her opinions in such a way as to imply that anyone who thinks otherwise is an idiot Synonyms & Similar Words
- declare
- assert
- proclaim
- affirm
- profess
- say
- announce
- aver
- avow
- guarantee
- explain
- lay down
- justify
- pronounce
- defend
- promote
- advertise
- assure
- emphasize
- uphold
- convince
- advocate
- accent
- stress
- plug
- persuade
- advance
- publicize
- underscore
- champion
- call
- underline
- blaze
- support
- boost
- accentuate
- rationalize
- reaffirm
- reassert
- espouse
Antonyms & Near Antonyms
- minimize
- ignore
- disregard
- understate
- overlook
- neglect