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

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adj. Having relaxing or pacifying properties; sedative.

n. A sedative.

adj. That calms

n. A drug with calming effects.

Quieting excessive action of any organ; relieving nervous agitation; sedative.

n. A quieting drug or other therapeutic agent; a soothing remedy.

"It is known as a calmative, and research has found that ingestion of chamomile acts as a wonderful mild sedative and antispasmodic."

annoying    agitating    disturbing    exciting    irritating   

calming    quieting    soothing    tranquilizing    quietive    dulcet    balmy    lulling