2 definitions found
From The Collaborative International Dictionary of English v.0.44 [gcide]:
Eerily \Ee"ri*ly\, adverb In a strange, unearthly way.
From WordNet (r) 2.0 [wn]:
eerily
adverb
1: in an unnatural eery manner; "it was eerily quiet in the chapel" [syn: {spookily}]