1) Cross 2) Difficult 3) Disobedient 4) Hard 5) Hostile 6) Indocile 7) Irritable 8) Irritated 9) Peevish 10) Pettish 11) Petulant 12) Restive 13) Techy 14) Testy 15) Tetchy 1) Disobedient 2) Easily irritated or annoyed 3) Irritable 4) Likely to be troublesome 5) Peevish 6) Readily angered 7) Refractory 8) Testy 
irritable; peevish
• (a.) Apt to break out into a passion; apt to scold; cross; snappish; ugly; unruly; as, a fractious man; a fractious horse.
Frac'tious adjective [ Confer Prov. English frack forward, eager, English freak , fridge ; or Prov. English fratch to squabble, quarrel.] Apt to break out into a passion; apt to scold; cross; snappish; ugly; unruly; as, a fractious man; a fractious horse. ...
[adj] - stubbornly resistant to authority or control 2. [adj] - unpredictably difficult in operation
refractory adjective stubbornly resistant to authority or control; `a fractious animal that would not submit to the harness`; `a refractory child`
refractory or unruly: a fractious animal that would not submit to the harness. · readily angered; peevish; irritable; quarrelsome: an incorrigibly fractious young man.
[SAT terms] easily irritated or annoyed stubbornly resistant to authority or control easily irritated or annoyed[Wise words] stubbornly resistant to authority or control[Lesser known words] stubbornly resistant to authority or control easily irritated or annoyed[Intelligent words] easily irritated or annoyed