Definition of Attest

Verb

• establish or verify the usage of
  "This word is not attested until 1993"
  
• give testimony in a court of law
  testify - take the stand - bear witness
• authenticate, affirm to be true, genuine, or correct, as in an official capacity
  "I attest this signature"
  
• provide evidence for
  stand as proof of
  show by one's behavior, attitude, or external attributes
  "His high fever attested to his illness"
  "The buildings in Rome manifest a high level of architectural sophistication"
  "This decision demonstrates his sense of fairness"
  certify manifest demonstrate evidence

• Scrabble® score of the attest (6)
• Word Chums® score of the attest (6)
• Words With Friends® score of the attest (6)