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Usage examples of "sponte".
Your appeal didn't bring up that point and here, the court undertook sua sponte to declare that the plaintiff should recover all the profits and they moved to modify that so they could prove the value of their own contribution, move over a little so I can get my jacket off will you?
Ora pro Thoma Malory Equite, discipuloque humili ejus, qui nunc sua sponte libros deponit ut pro specie pugnet.