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

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adj. Ending, terminating, dying.

v. Present participle of expire.

adj. Breathing out air from the lungs; emitting fluid or volatile matter; exhaling; breathing the last breath; dying; ending; terminating.

adj. Pertaining to, or uttered at, the time of dying

Pertaining to or used in the breathing out of air from the lungs.

Pertaining or belonging to the close of life; occurring just before death: as, expiring efforts; expiring groans.

"Mr. Hantler and Mr. Smith will serve as additional Class II directors, each for a term expiring on the date of the Company's 2013 annual meeting of stockholders."

exhaling    dying    ending    terminating   

expire   

acquiring    admiring    aspiring    conspiring    firing    hiring    inspiring    perspiring    quiring    rehiring