Expedient :: Expedient (a.) Hastening or forward; hence, tending to further or promote a proposed object; fit or proper under the circumstances; conducive to self-interest; desirable; advisable; advantageous; -- sometimes contradistinguished from right..
Inexpedient :: Inexpedient (a.) Not expedient; not tending to promote a purpose; not tending to the end desired; inadvisable; unfit; improper; unsuitable to time and place; as, what is expedient at one time may be inexpedient at another..