- (a.) Attended with suffering or disaster; very unfortunate; calamitous; ill-fated; as, a disastrous day; a disastrous termination of an undertaking.
- (a.) Full of unpropitious stellar influences; unpropitious; ill-boding.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). disastrous. Retrieved September 22, 2026, from http://smartdefine.org/disastrous/definitions/1998123 |
| Chicago | Webster's. 2011. "disastrous" http://smartdefine.org/disastrous/definitions/1998123 (accessed September 22, 2026). |
| Harvard | Webster's 2011, disastrous, Smart Define, viewed 22 September, 2026, <http://smartdefine.org/disastrous/definitions/1998123>. |
| MLA | Webster's. "disastrous" 27 May 2011. Web. 22 September 2026. <http://smartdefine.org/disastrous/definitions/1998123> |