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.
Speaking on behalf of hundreds of thousands of filmmakers worldwide. Shania Russell, Entertainment Weekly, 22 Feb. 2026 Speakers from both sides agreed that Hargraves held an uncommon ability to cooperate across party lines and work on behalf of residents. Don Stacom, Hartford Courant, 22 Feb. 2026 Lawnmower parents frequently communicate with teachers or other figures of authority on their children's behalf instead of allowing their children to advocate for themselves, or take responsibility for their own actions. Jazmin Towe, Parents, 22 Feb. 2026 Zimmerman also argued that the trial attorneys failed to hire experts to testify on Serafini’s behalf in the trial, and that Dratman did not provide much of a defense in his closing argument. Rosalio Ahumada, Sacbee.com, 21 Feb. 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 1 Mar. 2026.

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

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster