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

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adj. Involving irritation.

adj. Serving to excite or irritate.

adj. Accompanied with, or produced by, increased action or irritation.

adj. Serving to excite or irritate; irritating.

adj. Accompanied with, or produced by, increased action or irritation.

Serving to excite or irritate.

Accompanied with or produced by irritation.

adj. (used of physical stimuli) serving to stimulate or excite

"This kind of connection we shall term irritative association, to distinguish it from sensitive and voluntary associations."

stimulative   

irritative fever   

irritating   

sensitive    voluntary    tortoise-like    pain-stricken    sleep-related    blackwater    undulatory    tertian    kemetic    aguish