ef·​fuse | \ i-ˈfyüz How to pronounce effuse (audio) , e- \
effused; effusing

Definition of effuse

 (Entry 1 of 2)

transitive verb

: to pour out (a liquid)

intransitive verb

1 : to flow out : emanate
2 : to make a great or excessive display of enthusiasm they effused about his accomplishments


ef·​fuse | \ i-ˈfyüs How to pronounce effuse (audio) , e- \

Definition of effuse (Entry 2 of 2)

: diffuse specifically : spread out flat without definite form effuse lichens

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Synonyms for effuse

Synonyms: Verb

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Examples of effuse in a Sentence

Verb pundits who should have known better effused endlessly about this idealistic but naive senator
Recent Examples on the Web: Verb In the weeks before the appearance of those lava-effusing fissures on its eastern flanks, the volcano had been inflating. Robin George Andrews, New York Times, "Did Heavy Rain Make Hawaii’s Kilauea Volcano Erupt?," 22 Apr. 2020 The Eritrean leader also effused about the new era of friendly relations between the two countries. Elias Meseret, The Christian Science Monitor, "Ethiopia and Eritrea unite after ending 20-year border war," 9 July 2018 Senate President Peter Courtney, a Democrat, also effused about lawmakers' productivity. Gordon R. Friedman, OregonLive.com, "Oregon lawmakers end mild-mannered session with tweaks on guns, housing, taxes," 3 Mar. 2018 In the days after Silvers’s death, dozens of writers effused on the magazine’s website and elsewhere. John Williams, New York Times, "Ian Buruma on a New Era at The New York Review of Books," 9 Sep. 2017 And Wenger effused over Sanchez's second-half display, while complimenting the impact of Kolasinac after the break. SI.com, "Arsene Wenger Hails 'Exceptional' Alexis Sanchez After 'Convincing' Europa League Win," 15 Sep. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'effuse.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of effuse


1526, in the meaning defined at transitive sense


circa 1530, in the meaning defined above

History and Etymology for effuse


borrowed from Latin effūsus, past participle of effundere "to pour out, discharge, expend," from ef- ex- entry 1 + fundere "to pour, shed" — more at found entry 5


borrowed from Latin effūsus — more at effuse entry 1

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Cite this Entry

“Effuse.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/effuse. Accessed 6 May. 2021.

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More Definitions for effuse


ef·​fuse | \ i-ˈfyüs, e- How to pronounce effuse (audio) \

Medical Definition of effuse

: spread out flat without definite form an effuse colony of bacteria

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