grumbler

noun

Etymology: Etymology tree English grumble Proto-Indo-European *-yósder. Proto-Italic *-āzijos Latin -āriusnom. Latin -āriusbor. Proto-Germanic *-ārijaz Proto-West Germanic *-ārī Old English -ere Middle English -ere English -er English grumbler From grumble + -er.

1. A person who persistently grumbles; a complainer.

   “But the grumbler must be heard through the newspapers, and a great deal of unpleasantness comes to newspapers from the grumbler; and the newspapers, and not the grumbler, nearly always have to take the brunt of the trouble.”