SKULDUGGERY Meaning of SKULDUGGERY in English [ skʌl'dʌg(ə)ri ](also skullduggery ) ■ noun underhand or unscrupulous behaviour; trickery.OriginC19: alt. of Scots sculduddery , of unknown origin. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004