ee·rie or ee·ry 
(îrē)
(îrē)adj. ee·ri·er, ee·ri·est
1. Inspiring inexplicable fear, dread, or uneasiness; strange and frightening. See Synonyms at weird.
2. Scots Frightened or intimidated by superstition.
[Middle English eri, fearful, from Old English earg, cowardly.]
eeri·ly adv.
eeri·ness n.