had been dirtying

• past perfect progressive

  past perfect progressive

  Used to describe an action that was ongoing continuously in the past up until another past event interrupted it.

  of dirty.
  dirty

  adjective

  soiled with dirt; foul; unclean.

Related Words

• contaminated
• crummy
• disheveled
• dusty
• filthy
• greasy
• grimy
• messy
• muddy
• murky
• nasty
• polluted
• sloppy
• stained
• unkempt