When Do You Use Behalves?

1. as a representative of, representing, in the name of, as a spokesperson for She made an emotional public appeal on her son's behalf. On behalf of my wife and myself, I'd like to thank you all.

Is there such a word as Behalves?

A: In modern usage, “behalf” is an invariable noun and has no plural form. The old plural “behalves” is considered obsolete and has been for some time.

Is there a plural form of behalf?

Historically, “behalf” has also had a plural form, either “behalves” (modeled on the plural of “half”) or, more commonly, “behalfs.” When multiple parties are involved, I think the question is whether their interests (i.e., “behalfs”) are the same or separate.