
1) Assure 2) Attest 
Found on 
https://www.crosswordclues.com/clue/vouch

1) Attest 2) Bear witness 3) French word used in English 4) Give personal assurance 5) Give supporting evidence 6) Guarantee 7) Lend personal assurance 8) Take the stand 9) Testify 10) To assert 11) To aver 12) To back 13) To bear witness 14) To call 15) To call as a witness 16) To confirm 17) To declare 
Found on 
https://www.crosswordclues.com/clue/vouch

• (v. t.) To call upon to witness; to obtest. • (n.) Warrant; attestation. • (v. t.) To call into court to warrant and defend, or to make good a warranty of title. • (v. t.) To back; to support; to confirm; to establish. • (v. t.) To call; to summon. • (v. i.) To bear witness; to give testimony or full attestation. &bu...
Found on 
http://thinkexist.com/dictionary/meaning/vouch/

Prove accuracy of accounting entries by tracing to supporting documents.
Found on 
http://www.ais-cpa.com/glosa.html
 Vouch  intransitive verb   1.
Vouch  intransitive verb   1.  To bear witness; to give testimony or full attestation. « He will not believe her until the elector of Hanover shall 
 vouch for the truth of what she has . . . affirmed.» 
 Swift.   2.  To assert; to aver; to declare. 
 Shak. Found on 
http://www.encyclo.co.uk/webster/V/37
 Vouch  noun
Vouch  noun  Warrant; attestation. [ Obsolete] « The 
 vouch of very malice itself.» 
 Shak. Found on 
http://www.encyclo.co.uk/webster/V/37
 Vouch  transitive verb
Vouch  transitive verb [ 
 imperfect & past participle   Vouched ; 
 present participle & verbal noun   Vouching .] [ Middle English 
 vouchen , Old French 
 vochier to call, from Latin 
 vocare to call, from 
 vox , 
 voci...Found on 
http://www.encyclo.co.uk/webster/V/37

[
v] - give personal assurance 2. [v] - summon (a vouchee) into court to warrant or defend a title 3. [v] - give supporting evidence
Found on 
http://www.webdictionary.co.uk/definition.php?query=vouch

vouch 1. To assert or to confirm as a result of one's own experience, the truth or accuracy of something.  2. To provide supporting evidence for the quality of somebody or something.  3. To give personal assurances, or a guarantee: 'He was willing to vouch for his friend's trustworthiness.  4. To constitute supporting evidence or to give substantia...
Found on 
http://www.wordinfo.info/words/index/info/view_unit/2320/7
  No exact match found.