Word.ws English Dictionary

How to use proof in a sentence

40 example sentences · noun, adjective, verb

Proof means an effort, process, or operation designed to establish or discover a fact or truth; an act of testing; a test; a trial. Example: “I need proof of your unconditional love. Lend me some dough.”

Examples of proof by meaning

nounAn effort, process, or operation designed to establish or discover a fact or truth; an act of testing; a test; a trial.

  • I need proof of your unconditional love. Lend me some dough.

nounA proof sheet; a trial impression, as from type, taken for correction or examination.

  • And these men scour the printed proof for error, blunder, and misspelling.2010, Andrea Levy, The Long Song, Tinder Press (2017), page 382

adjectiveUsed in proving or testing.

  • a proof load; a proof charge

adjectiveFirm or successful in resisting.

  • proof against harm

adjectiveBeing of a certain standard as to alcohol content.

  • 60% proof liquor

More sentences with proof

  • Cantor’s “diagonal proof” shows that the set of real numbers is uncountable.From the entry uncountable
  • A singular experiment cannot be regarded as scientific proof of the existence of a phenomenon.From the entry singular
  • For a complete proof of the Poincaré conjecture, see Appendix C.From the entry see
  • Only formal proofs, which derive theorems logically from their given axioms, are considered satisfactory in modern mathematics.From the entry formal
  • To make your proof easier to understand, I recommend you insert a few more steps.From the entry insert
  • The proof we provide is a nice indirect proof due to Euclid.From the entry due to
  • The prime numbers are infinite, therefore any proof that depends on their exhaustibility is flawed.From the entry exhaustibility
  • Proof of citizenship is requirable for some services but not for all.From the entry requirable
  • Divide in half to relate proof to ABV: whiskey that is 80 proof is 40% ABV.From the entry abv
  • There's a cute alternative proof of this using lambda calculus.From the entry cute
  • (obligation): Citizens shall provide proof of identity.From the entry shall
  • The proof of the theorem had a pleasing elegance.From the entry elegance
  • That fact is not capable of proof.From the entry capable
  • Some states require proof that a new venture is properly capitalized before the state will issue a certificate of incorporation.From the entry capitalize
  • There is no proof of premeditated or grossly negligent wrongdoing.From the entry premeditated
  • In certain Christian circles, invoking the Bible constitutes irrefutable proof.From the entry invoke
  • We have proof of her crime on tape.From the entry on tape
  • His story is living proof that anyone who puts in a good amount of hard work can find success.From the entry living proof
  • I know you didn't think it was a very good product, but just look at the fantastic sales figures. That's the proof of the pudding.From the entry the proof of the pudding is in the eating
  • A: I noticed a minor typo in the proofs just now, but I think they're already doing the make-ready on the press. B: Time to let sleeping dogs lie then.From the entry let sleeping dogs lie
  • "This is further proof that ASLEF is willing to negotiate in good faith and modernise our railway.2023 May 31, Mel Holley, “Network News: ASLEF recommends £71,000 pay deal for TfW drivers”, in RAIL, number 984, page 20. From the entry lay bare
  • Popping open a stack of dough proofing containers in their walk-in refrigerator, Mr.2023 March 17, J. Kenji López-Alt, “Kenji López-Alt Spent 5 Months Studying Chicago Thin-Crust Pizza. Here’s What He Learned.”, in The New…. From the entry pizzamaker
  • And Avanti West Coast was unable to provide any proof for its assertion, when questioned by RAIL.2022 August 24, Philip Haigh, “Network News: Union slams Avanti West Coast: 'lie' as services slashed”, in RAIL, number 964, page 6. From the entry assertion
  • Sentimental doesn't equate to boring, and this fun cryptex puzzle with hidden compartments is proof of that.2022 November 23, Neha Tandon, Emily Shiffer, “39 Best Sentimental Gifts 2022: Unique, Memorable Ideas”, in Women's Health Magazine…. From the entry cryptex
  • U.S. law considers alcohol proof to be twice the ABV percentage.2021 June 7, “Understanding Alcohol Proof: How Is Alcohol Proof Measured?”, in MasterClass. From the entry abv
  • That seems to be a rat, proof that cats guarded ailourophobic Medieval humans from the plague.2021 December 7, u/catalyptic, “meow_irl”, in r/MEOW_IRL (Reddit post), archived from the original on 07 Dec 2021. From the entry ailourophobic
  • Implementation of a zero-knowledge proof significantly improves the privacy and security of many systems.2020, Lorne Lantz, Daniel Cawrey, Mastering Blockchain, O'Reilly Media, →ISBN, page 185. From the entry zero-knowledge proof
  • The merch is proof of how much the sentiment resonates with people.2019 October 19, “'OK Boomer' Marks the End of Friendly Generational Relations”, in NY Times. From the entry merch
  • If anyone bothered to look, Reddit was proof that on the internet, the trolls were in charge.2018 October 30, David Streitfeld, “Where trolls reigned free: A new history of Reddit [review of We are the Nerds: The Birth and…. From the entry troll
  • There are many ways to prepare it, and a flawless result is uncontestable proof of proper technique.2018, Katerina Tsemperlidou, translated by Alexandra Kalapothaki, Greek Women are Goddesses, AKAKIA Publications, →ISBN. From the entry coffeemaker
  • (in Farsi) Today I have proof from an unimpeachable source you are a traitor.2017, “Imminent Risk” (28:50 from the start), in Homeland, season 6, episode 7, spoken by Naser (Anthony Azizi). From the entry unimpeachable
  • “There was no proof, I haven’t even performed the last rites.”2017 February 9, “Time runs out for victims of Nepal’s civil war as deadline to investigative abuses expires”, in South China Morning…. From the entry Birendranagar
  • The uppers were reached by comfortably safe steps with handrails and slip proof coatings.2016, Constance R. Pottenger, Drop Dead Casino - Ginger The First, page 31. From the entry upper
  • We present a complex analytic proof of the Pila-Wilkie theorem for subanalytic sets.2016, Gal Binyamini, Dmitry Novikov, “The Pila-Wilkie theorem for subanalytic families: a complex analytic approach”, in arXiv. From the entry subanalytic
  • We will discuss the proof of l’Hôpital’s rule later in this section.2016, Daniel J. Velleman, “Applications of Differentiation”, in Calculus: A Rigorous First Course, Mineola, N.Y.: Dover Publications…. From the entry L'Hôpital's Rule

Meaning of proof

  1. noun An effort, process, or operation designed to establish or discover a fact or truth; an act of testing; a test; a trial.
  2. noun The degree of evidence which convinces the mind of any truth or fact, and produces belief; a test by facts or arguments which induce, or tend to induce, certainty of the judgment; conclusive evidence; demonstration.
  3. noun The quality or state of having been proved or tried; firmness or hardness which resists impression, or does not yield to force; impenetrability of physical bodies.

Full definition of proof

Questions about proof in a sentence

How do you use proof in a sentence?
Proof is used as a noun, adjective and verb. For example: “I need proof of your unconditional love. Lend me some dough.”
What is a short sentence with proof?
“60% proof liquor”
What does proof mean?
Proof means an effort, process, or operation designed to establish or discover a fact or truth; an act of testing; a test; a trial.

Source and license

Adapted from Wiktionary: proof (page history and authors) and the entries each sentence comes from. Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws chose the sentences, left out offensive ones and quotations older than 1900, and marked the word in each. Wiktionary data of 2026-09-02.

Last updated:

Cite this page: “How to use proof in a sentence.” Word.ws, https://word.ws/sentences/proof. Based on Wiktionary, CC BY-SA 4.0.