murdering adverb 1noun 1forms 1 adverb1 •(Ireland) Exceedingly; terribly; incredibly."But I was up, you see, murdherin' late last night." "To be shure, thin, Paddy, it was up at the great dinner, yisterday, above at the big house you wor." — 1850 noun1 •The act of committing murder. formsmurderings