has been slitting

• 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 slit (3rd person singular).
  slit

  verb (used with object)

  to cut apart or open along a line; make a long cut, fissure, or opening in.

Related Words

• aperture
• cleavage
• crevice
• fissure
• incision