If you describe something as eerie, you mean that it seems strange and frightening, and makes you feel nervous. I walked down the eerie dark path. an eerie calm. + eerily eeri·ly Monrovia after the fighting is eerily quiet. strange and frightening (earg )
so strange as to inspire a feeling of fear; "an uncomfortable and eerie stillness in the woods"; "an eerie midnight howl" suggestive of the supernatural; mysterious; "an eerie feeling of deja vu