Source : Webster's Revised Unabridged Dictionary (1913)

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.

         Behold an Israelite indeed, in whom is no guile. --John
                                                  i. 47.

         To wage by force or guile eternal war.   --Milton.

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

Source : WordNet®

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