fret·ful 
(frĕtfəl)
(frĕtfəl)adj.
1. Inclined to be vexed or troubled; peevish.
2. Marked by worry and distress; troublesome: "Of all the fretful stages of human development, adolescence is the most infamous" (David Gelman).
fretful·ly adv.
fretful·ness n.