By LAWRENCE FELLOWS
Limpid, despite what some people think, has nothing to do with limp. In fact it means clear or lucid, as in limpid eyes or a limpid style of writing. You can see clear to the bottom of a limpid pool.
Languid means apathetic or dull, as in languid spirits, or a languid manner.
A languid young lady might have limpid eyes. Also, a languid wave of her hand might be most convincingly done with a limp wrist.