certes

enUK

cer·tes

C0214200 (sûr′tēz, sûrts)adv. Archaic Certainly; truly.
[Middle English, from Old French (a) certes, perhaps from Latin ad certās or from Vulgar Latin *certānus, both from Latin certus, certain; see certain.]

certes

(ˈsɜːtɪz) advarchaic with certainty; truly[C13: from Old French, ultimately from Latin certus certain]

cer•tes

(ˈsɜr tiz)

adv. Archaic. certainly; in truth. [1200–50; Middle English < Old French phrase a certes < Latin *ā certīs, literally, from sure (things); see a-4, certain]