has been invaliding

• 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 invalid (3rd person singular).
  invalid

  noun

  an infirm or sickly person.

Related Words

• baseless
• false
• inoperative
• irrational
• null
• unfounded
• unreasonable
• unscientific
• unsound
• untrue