has been overrunning

• 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 overrun (3rd person singular).
  overrun

  verb (used with object)

  to rove over (a country, region, etc.); invade; ravage.

Related Words

• beset
• choke
• deluge
• inundate
• invade
• overflow
• overwhelm
• ravage