Simple past tense and past participle of grunt.(verb)
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Use "grunted" in a sentence
"Ansar, my camel - so-called because his name meant "the oldest" in Arabic - grunted as it attempted to navigate the soft, undulating curves or piste, of the Sahara."
"Playing on the Ravons, I called the new management company Nevermore Ltd. When I asked Tug what he thought of the name he grunted and asked if it was for the home of Peter Pan, “Where the Lost Boys never grow up.”"
"Hyaki looked over his shoulder, grunted a kata, and wished that their food would hurry up and emerge from hibernation in the kitchen."