Synonyms for Miffed:

adj.

huffy (adjective)
cross.
hurt (adjective)
sore.
incensed (adjective)
infuriated, mad.
indignant (adjective)
displeased.
miffed (adjective)
irritated, vexed, Piqued, upset, resentful, nettled, peeved, put out, riled, offended, annoyed.
resentful (adjective)
envious, acerbic, antagonistic, discontent, malevolent, galled, irritated, bitter, vexed, splenetic, offended, embittered, stung, sore, Spleenful, vindictive, Huffed, Piqued, spiteful, resentful, infuriated, hurt.

n.

belligerent, upset, cross, put out, fed up, angry, mad. miffed (noun)
irritated, roiled, annoyed, displeased, riled, nettled, pissed off, stung, peeved, steamed.

v.

miff (verb)
hurt.

Other synonyms:

enraged
angry.
Other relevant words:
belligerent, put out, peeved, riled, roiled, angry, nettled, upset, displeased, annoyed, mad, cross, steamed.