has been cluing

• 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 clue (3rd person singular).
  clue

  noun

  anything that serves to guide or direct in the solution of a problem, mystery, etc..

Related Words

• cue
• indication
• inkling
• key
• pointer
• proof
• solution
• suggestion
• tip
• trace