Functional

[Sarah]

Pertaining to the function of an organ or part, or to thefunctions in general. Functional disease (Med.), a disease of whichthe symptoms cannot be referred to any appreciable lesion or changeof structure; the derangement of an organ arising from a cause, oftenunknown, external to itself opposed to organic disease, in which theorgan itself is affected.

[Tina]

Of or having a special activity, purpose, or task.

[Oralee]

adj. Physical and [mental state] during or after a period of heavy drinking when one is able to, just barely, [function] on a [minimalist] level.

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