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
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.
The Ebony Alert was issued on behalf of the Alameda County Sheriff's Office. Jose Fabian, CBS News, 8 Mar. 2026 Jost, who also submitted comments to the MPCA on her own behalf, noted that major flooding could someday spread hazardous waste that is buried dozens of feet down, and the site could eventually pose a threat to slope stability. Frederick Melo, Twin Cities, 8 Mar. 2026 Paul Thomas Anderson was not present to accept the prize, so Shayna McHayle, one of his castmembers, accepted on his behalf with a prepared statement from the writer-director. Hilary Lewis, HollywoodReporter, 8 Mar. 2026 In addition to a long music career, McDonald remained politically active, advocating on behalf of saving the whales and helping Vietnam War veterans. Daniel Kreps, Rolling Stone, 8 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 12 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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