The condition of being stale, in any sense of the adjective.

= superannuation, n.

The condition of being out of date; (an) antiquated or obsolete state or character.

The state or condition of being outmoded or old-fashioned; antiquatedness.

also (jocular nonce-words)

the state or condition of being antiquated.

The state, condition, or quality of being antiquated, outmoded, or old-fashioned.

The state or condition of being superannuated (in various senses).

The quality of not being novel; the opposite of novelty.

the quality or condition of being old-fashioned.

The state or condition of being a fossil (fossil, n. 3a); esp. resistance to new ideas, methods, etc.; out-of-dateness, stagnation.

spec. The process whereby or state at which machinery, consumer goods, etc., become obsolete as a result of technological advances, changes in…

The quality of being old-fashioned.

adherence to or liking for what is old-fashioned.

The state or condition of being out of date; obsoleteness; old-fashionedness.

The quality of being characteristic of a particular period; outdatedness, old-fashionedness.

the quality of being out of date or obsolescent.

A place which has not changed with the passage of time; a situation in which things are preserved in a form which they characteristically took in…