behalf

noun

be·​half bi-ˈhaf How to pronounce behalf (audio)
-ˈhäf,
bē-
: interest, benefit
also : support, defense
argued in his behalf
On Behalf of vs. in Behalf of: Usage Guide

A body of opinion favors in with the "interest, benefit" sense of behalf and on with the "support, defense" sense. This distinction has been observed by some writers but overall has never had a sound basis in actual usage. In current British use, on behalf (of) has replaced in behalf (of); both are still used in American English, but the distinction is frequently not observed.

Phrases
on behalf of or in behalf of
: in the interest of
also : as a representative of
I wrote the letter on behalf of my client.

Examples of behalf in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
President Trump’s administration weighed in on behalf of Catholic Charities. Lindsay Whitehurst, Los Angeles Times, 5 June 2025 According to a recent Intelligencer profile, around 22,000 volunteers and counting have canvassed on behalf of Zohran for NYC, as Mamdani challenges to win the Democratic nomination. Walden Green, Pitchfork, 5 June 2025 The investigation, which Seattle hired outside counsel to conduct, concluded with no evidence of wrongdoing on the Storm’s behalf. Sabreena Merchant, New York Times, 5 June 2025 In a Facebook post on Tuesday, June 3, the Little Elm Police Department shared photos of its officers retrieving a snake from a firehouse on behalf of the Little Elm Fire Department. David Chiu, People.com, 5 June 2025 See All Example Sentences for behalf

Word History

Etymology

Middle English, from by + half half, side

First Known Use

14th century, in the meaning defined above

Time Traveler
The first known use of behalf was in the 14th century

Browse Nearby Words

Cite this Entry

“Behalf.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/behalf. Accessed 8 Jun. 2025.

Kids Definition

behalf

noun
be·​half bi-ˈhaf How to pronounce behalf (audio)
-ˈhȧf
: useful aid : support
spoke in my behalf

More from Merriam-Webster on behalf

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