had been submerging

• 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 submerge.
  submerge

  verb (used with object)

  to put or sink below the surface of water or any other enveloping medium.

Related Words

• deluge
• douse
• drench
• drown
• engulf
• flood
• immerse
• inundate
• overflow
• overwhelm
• sink
• subside
• swamp