WordNet (r) 3.0 (2006):

browned off
    adj 1: greatly annoyed; out of patience; "had an exasperated
           look on his face"; "felt exasperated beyond endurance"
           [syn: exasperated, cheesed off, browned off]

Moby Thesaurus II by Grady Ward, 1.0:

42 Moby Thesaurus words for "browned off":
   aggravated, angered, angry, annoyed, bothered, bugged, burnt-up,
   chafed, cross, disturbed, exasperated, galled, griped, incensed,
   indignant, irate, ireful, irked, irritated, livid, mad, miffed,
   nettled, peeved, piqued, pissed, pissed-off, provoked, resentful,
   riled, riled up, roiled, ruffled, sore, ticked off, troubled,
   vexed, worked up, wrathful, wrathy, wroth, wrought-up