will have been snickering

• future perfect progressive

  future perfect progressive

  Used to describe a continuous action that will progress up until a designated point of completion in the future.

  of snicker.
  snicker

  verb (used without object)

  to laugh in a half-suppressed, indecorous or disrespectful manner.

Related Words

• chortle
• chuckle
• giggle
• laugh
• smirk
• sneer