ˈfretsome,a.rare. [f. fret v.1 + -some.] a. Causing to fret; annoying. b. Given to fretting. 1834J. Wilson in Blackw. Mag. XXXVI. 586 Incessant refilling of plates is fretsome.1870E. S. Phelps Hedged In xviii. 273 Been aye too busy and poor an' fretsome.