had been verifying

• 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 verify.
  verify

  verb (used with object)

  to prove the truth of, as by evidence or testimony; confirm; substantiate.

Related Words

• authenticate
• certify
• check
• corroborate
• demonstrate
• double-check
• establish
• find out
• justify
• prove
• substantiate