adv. Obs. rare1. [irreg. f. SURE a. + -fully, adv. to -FUL 1.] In security.

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1495.  Act 11 Hen. VII., c. 2. Preamble, The Kyngis grace … desireth … his subgettis … to leve quietly and surefully to the plesure of God and according to his lawes.

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