'Left-handedness has also been called mancinism, sinistromanua | Daily Quotes and Facts

"Left-handedness has also been called mancinism, sinistromanuality, and cackhandedness. Other colloquialisms for left-handedness include skivvy-handed, scrummy-handed, kaggy-fisted, cawk-fisted, gibble-fisted, southpaw, cunny-and ballock-handed"
~ Left Handed People