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.
But a small number are involved in espionage or other activities on behalf of the [Chinese Communist Party]. Ashish Valentine, NPR, 29 June 2025 The Maryland Family Institute filed an amicus brief in this case on behalf of concerned families across our state and nation. Jeffrey S. Trimbath, Baltimore Sun, 29 June 2025 There have been reports of mass arrests and even executions of those accused of espionage on behalf of Israel. Rachel Wolf, FOXNews.com, 28 June 2025 The lawyers who brought the case on behalf of residents of Encanto and southeastern San Diego said the city has three years to show measurable progress toward spreading at least 70% of affordable-housing projects across the city. Jeff McDonald, San Diego Union-Tribune, 28 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 4 Jul. 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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