The Collaborative International Dictionary of English v.0.48:

Guile \Guile\, n. [OE. guile, gile, OF. guile; of German origin,
   and the same word as E. wile. See Wile.]
   Craft; deceitful cunning; artifice; duplicity; wile; deceit;
   treachery.
   [1913 Webster]

         Behold an Israelite indeed, in whom is no guile. --John
                                                  i. 47.
   [1913 Webster]

         To wage by force or guile eternal war.   --Milton.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Guile \Guile\, v. t. [OF. guiler. See Guile, n.]
   To disguise or conceal; to deceive or delude. [Obs.]
   --Spenser.
   [1913 Webster]

WordNet (r) 3.0 (2006):

guile
    n 1: shrewdness as demonstrated by being skilled in deception
         [syn: craft, craftiness, cunning, foxiness,
         guile, slyness, wiliness]
    2: the quality of being crafty [syn: craftiness,
       deceitfulness, guile]
    3: the use of tricks to deceive someone (usually to extract
       money from them) [syn: trickery, chicanery, chicane,
       guile, wile, shenanigan]