Stale \Stale\, v. t. [imp. & p. p. Staled; p. pr. & vb. n. Staling.]

To make vapid or tasteless; to destroy the life, beauty, or use of; to wear out.

Age can not wither her, nor custom stale Her infinite variety. --Shak.

Source: Webster's Revised Unabridged Dictionary (1913)