ee·rie or ee·ry (îr??)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.]ee?ri·ly adv.ee?ri·ness n.American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.