FRACTIOUS Meaning of FRACTIOUS in English [frac.tious] adj [fraction (discord) + -ous] (1725) 1: tending to be troublesome: unruly 2: quarrelsome, irritable -- frac.tious.ly adv -- frac.tious.ness n Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012