c. 1550. Clariodus, V. 1925. Apollo restless and unfatigabill.
1592. Nashe, P. Penilesse, F 2 b. As industrie and vnfatigable toyle rayseth meane persons … to high thrones of authoritie.
1622. Malynes, Anc. Law-Merch., 84. Which cannot be done without an vnfatigable industrie.
1627. Lisander & Cal., IX. 184. Hee seemed so unfatigable in his armes.
