Word.ws English Dictionary

proofful

proofful adjective: serving to prove something.

Adjective

proofful (comparative more proofful, superlative most proofful)

  1. Serving to prove something.
    • The production of so many varying but similar phenomena by one cause seems to me more proofful of its efficacy than if the results of its action were more uniform. It shows that under circumstances necessarily varying greatly it acts always in the same direction.1870, Charles Handfield Jones, Studies on functional nervous disorders (page 356)

Forms of proofful

comparativemore proofful
superlativemost proofful

Origin of proofful

From proof + -ful.

Questions about proofful

What does proofful mean?
Proofful means serving to prove something.
What part of speech is proofful?
Proofful is an adjective.

Words near proofful in the dictionary

  1. proof-reading
  2. proof-reads
  3. proofed
  4. proofer
  5. proofers
  6. proofful
  7. proofgame
  8. proofgames
  9. proofhouse
  10. proofhouses
  11. proofing

Source and license

Adapted from Wiktionary: proofful (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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