will be mumbling

• future progressive

  future progressive

  Used to describe an ongoing action or continuous state that will be taking place in the future.

  of mumble.
  mumble

  verb (used without object)

  to speak in a low indistinct manner, almost to an unintelligible extent; mutter.

Related Words

• grumble
• murmur
• mutter
• ramble
• rumble
• stammer
• stutter
• utter
• whisper