Word.ws English Dictionary

Past tense of diffuse

regular verb

The past tense of diffuse is diffused. The past participle is also diffused.

Forms of diffuse

Base form (V1)diffuse /dɪˈfjuːz/
Past tense (V2)diffused
Past participle (V3)diffused
Present participlediffusing
Third person singulardiffuses

Diffused in a sentence

  • Ideas are easily diffused with the help of technology.
  • The riot diffused quite suddenly.
  • The air of wealth and repose diffused about them seemed to comfort their neediness.1916, James Joyce, chapter V, in A Portrait of the Artist as a Young Man, New York, N.Y.: B[enjamin] W. Huebsch, →OCLC, page 288. From the entry repose
  • Fred Lockman on Beach street succumbed Tuesday to an attack of acute diffused peritonites.1914 January 30, “Valerina Lockmann^([sic])”, in H. D. Meister, editor, The Democratic Expositor, volume XL, number 4, Wauseon, Oh.…. From the entry Valerina
  • However, they obviously do not expect that this stewardish character has diffused throughout the organization and reached the IR department.2011, Elisa Minou Zarbafi, Responsible Investment and the Claim of Corporate Change. From the entry stewardish

Meaning of diffuse

  1. verb To spread (something) over or through as in air, water, or other matter, especially by fluid motion or passive means.
  2. verb To be spread over or through as in air, water, or other matter, especially by fluid motion or passive means.
  3. adjective Everywhere or throughout everything; not focused or concentrated.

Full definition of diffuse

Questions about the past tense of diffuse

What is the past tense of diffuse?
The past tense of diffuse is diffused.
What is the past participle of diffuse?
The past participle of diffuse is diffused.
Is diffuse a regular or irregular verb?
Diffuse is a regular verb: its past tense adds -d.

Source and license

Adapted from Wiktionary: diffuse (page history and authors) and the entries of its forms. Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws left out forms marked obsolete, archaic, rare or dialectal and added the examples. Wiktionary data of 2026-09-02.

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Cite this page: “Past tense of diffuse.” Word.ws, https://word.ws/past-tense/diffuse. Based on Wiktionary, CC BY-SA 4.0.