has proofed

• present perfect

  present perfect

  Used to describe actions that started in the past and continue into or have direct relevance to the present.

  of proof (3rd person singular).
  proof

  noun

  evidence sufficient to establish a thing as true, or to produce belief in its truth.

Related Words

• argument
• clue
• confirmation
• criterion
• data
• demonstration
• information
• picture
• reason
• testament
• testimony
• validation
• verification