Source : Webster's Revised Unabridged Dictionary (1913)

Eerie \Ee"rie\, Eery \Ee"ry\, a. [Scotch, fr. AS. earh timid.]
   1. Serving to inspire fear, esp. a dread of seeing ghosts;
      wild; weird; as, eerie stories.

            She whose elfin prancer springs By night to eery
            warblings.                            --Tennyson.

   2. Affected with fear; affrighted. --Burns.

Source : WordNet®

eerie
     adj 1: suggestive of the supernatural; mysterious; "an eerie
            feeling of deja vu" [syn: {eery}, {spooky}]
     2: so strange as to inspire a feeling of fear; "an
        uncomfortable and eerie stillness in the woods"; "an eerie
        midnight howl" [syn: {eery}]
     [also: {eeriest}, {eerier}]