has been rivalling

• 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 rival (3rd person singular).
  rival

  noun

  a person who is competing for the same object or goal as another, or who tries to equal or outdo another; competitor.

Related Words

• adversary
• challenger
• competition
• competitor
• contender
• opponent
• peer