had been attesting

• past perfect progressive

  past perfect progressive

  Used to describe an action that was ongoing continuously in the past up until another past event interrupted it.

  of attest.
  attest

  verb (used with object)

  to bear witness to; certify; declare to be correct, true, or genuine; declare the truth of, in words or writing, especially to affirm in an official capacity.

Related Words

• authenticate
• corroborate
• demonstrate
• indicate
• substantiate
• swear
• verify