Definition of guileful:
rogue, cagey, underhanded, clever, glib, double-dealing, shrewd, means, beguiling, tricksy, satiny, lubricious, honest, cunning, pat, subtle, shady, artful, fast, ability, dodgy, fraudulent, dicey, silklike, slippery, underhand, designing, indirect, scheming, sneaky, chanceful, foxy, silken, devious, disingenuous, knavish, shifty, chancy, crafty, bent, sly, catchy, deceptive, wily, sharp, silky, cute, slick, ingenious, duplicitous, sleek, crooked, tricky.
- "The Elder Eddas of Saemund Sigfusson; and the Younger Eddas of Snorre Sturleson", Saemund Sigfusson and Snorre Sturleson.
Hence it must be that in the former army officer's plan lay some intent more complex than mere open- and- shut meeting and slaying: some carefully planned and guileful climax to be approached by indirection.- "The Law of Hemlock Mountain", Hugh Lundsford.
- "A Victor of Salamis", William Stearns Davis.