behalf

noun

be·​half bi-ˈhaf How to pronounce behalf (audio)
-ˈhäf
bē-
: interest, benefit
also : support, defense
argued in his behalf
see also:
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.

Examples of behalf in a Sentence

Recent Examples on the Web
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Leftism thus constitutes an ongoing search for new causes to fight on behalf of, in a way that mobilizes adherents and creates solidarity among them. Bradley Gitz, Arkansas Online, 23 Mar. 2026 The company, run by two former Israeli intelligence agents, has been involved in a number of controversies over the years, including an undercover operation on behalf of the film mogul Harvey Weinstein to discredit his accusers. ABC News, 22 Mar. 2026 The petition for annexation was submitted to Castle Pines by VT Crowfoot Valley Landco LLC on behalf of nine private landowners. Olivia Young, CBS News, 21 Mar. 2026 Today’s ruling reaffirms the right of The Times and other independent media to continue to ask questions on the public’s behalf. Brieanna J. Frank, USA Today, 21 Mar. 2026 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 26 Mar. 2026.

Kids Definition

behalf

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

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