Proof and Theorem

Opposite meaning words

Proof noun - Something presented in support of the truth or accuracy of a claim.

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Theorem is an antonym for proof.

Nearby Words: proofed, proofing

Theorem noun - An idea accepted as a demonstrable truth.

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Proof is an antonym for theorem in explanation based on hypothesis and experiments topic.

Nearby Words: theoretic, theoretically

real	real proof	real theorem
little	little proof	little theorem
ancient	ancient proof	ancient theorem
new	new proof	new theorem
Other adjectives: last, scientific, mathematical.

E = MC Hammer - College student or not, Ash would probably never need to understand a theorem and proof from Principia Mathematica.

Source: Webcomic / Type Trainer
The Doctor does this a lot, especially in "The Eleventh Hour", where he establishes his identity by typing the real Fermat's Last Theorem and a proof for faster-than-light travel (with diagrams), and codes a computer virus on a cell phone, in about two minutes.

Source: Rapid-Fire Typing
More generally, anything obviously recognizable as simple math (such as digits of pi, or a proof of the Pythagorean theorem) can serve the same function.

Source: First Contact Math

Cite this Source

Theorem and Proof. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/proof/theorem

Proof & Theorem. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/proof/theorem>.

Theorem or Proof. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/proof/theorem.

Google Ngram Viewer shows how "proof" and "theorem" have occurred on timeline