will have flummoxed

• future perfect

  future perfect

  Used to describe an action that will be fully completed or achieved by a specific point in the future.

  of flummox.
  flummox

  verb (used with object)

  to bewilder; confound; confuse.

Related Words

• baffle
• bewilder
• confound
• discombobulate
• mystify
• nonplus
• perplex