guiler
A deceiver, a beguiler.
obsolete, rare
And þow hast gyuen hire to a gyloure · now god gyf þe sorwe.
Where it comes from
From Middle English giler, gylur, gylour, gilour, from Old French guilëor, equivalent to guile + -er.
Adapted from the Wiktionary entry guiler (CC BY-SA 4.0).