1. [adv]  not as might be expected; "The early Church not unnaturally adopted the position that failure to see the messianic character of his work was really caused by the people's own blindness"
2. [adv]  not according to nature; not by natural means; "artificially induced conditions"
3. [adv]  in an unnatural way; "his other arm lay across his chest, unnaturally, as if placed there deliberately, for a purpose"

UNNATURALLY is a 11 letter word that starts with U.