has been differing

• present perfect progressive

  present perfect progressive

  Used to describe an action that began in the past, has continued continuously, and is still in progress.

  of differ (3rd person singular).
  differ

  verb (used without object)

  to be unlike, dissimilar, or distinct in nature or qualities (often followed byfrom ).

Related Words

• alter
• conflict with
• contradict
• contrast
• disagree
• diverge
• modify
• vary