Found 2 items, similar to Gruntingly.
English → English (WordNet) Definition: grunting grunting adj : making short inarticulate guttural sounds as of effort expended; “ferries grunting on the river”; “grunting boxers”
English → English (gcide) Definition: Gruntingly Gruntingly \Grunt"ing*ly\, adv. In a grunting manner. [1913 Webster]