begrouch

From be- (“at, about, over”) +‎ grouch. Doublet of begrudge.

begrouch (third-person singular simple present begrouches, present participle begrouching, simple past and past participle begrouched)

1. (transitive, dated) To grouch over; complain about
   • 1916, Good Housekeeping, volume 63, page 154:

     But who will begrouch plain foods for invalid annimmel? Nobody perhaps.