Synonyms for Pissed Off (same or very similar meaning)
WordNet sense 1 (aroused to impatience or anger):
annoyed, irritated, miffed, pissed, stung, nettled, peeved, riled, roiled, steamed
WordNet sense 2 (not pleased; experiencing or manifesting displeasure):
displeased
From the ODE community, based on WordNet
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