disastrously

comparative more disastrously · superlative most disastrously

1. In a disastrous way. (Of the nature of a disaster; calamitously.)

   Mr. Dukakis charged that when it came to advising President Reagan on Iran, Mr. Bush was "disastrously and completely and unforgivably wrong."

   1988 September 13, Andrew Rosenthal, “Dukakis Stresses Defense, Ridicules Bush and Quayle”, in The New York Times

   1 more example

   It has frequently been found that these [timber dry] docks have been incapable of successfully resisting this force, and in many instances the altars have been forced off, the sides of the entrance works have been forced inward, the bottom of the dock has been uplifted, and, where defects in the work have existed, an inflood of water once set up has resulted very disastrously and endangered the entire structure.

   1899, “Maintenance of Yards and Docks”, in Annual Reports of the Navy Department for the Year 1899: Report of the Secretary of the Navy. Miscellaneous Reports, Washington, D.C.: Government Printing Office, →OCLC, page 230

   Synonyms: apocalyptically, calamitously, cataclysmically, catastrophically, destructively, devastatingly, perniciously, ruinously