This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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adj. Causing vexation or irritation; troublesome: an annoying cough.

adj. Causing irritation or annoyance; troublesome; vexatious.

v. Present participle of annoy.

adj. That annoys; molesting; vexatious.

adj. causing irritation or annoyance

n. the act of troubling or annoying someone

disagreeable   

calmative    sedative   

molesting    vexatious    displeasing    plaguesome    plaguey    thorny    painful    worrisome    irksome   

annoy   

buoying    cloying    deploying    destroying    employing    enjoying    joying    redeploying    toying