(a.) Exciting fear or apprehension; impressing dread; adapted to excite fear and deter from approach, encounter or undertaking; alarming.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). formidable. Retrieved September 20, 2026, from http://smartdefine.org/formidable/definitions/2009659 |
| Chicago | Webster's. 2011. "formidable" http://smartdefine.org/formidable/definitions/2009659 (accessed September 20, 2026). |
| Harvard | Webster's 2011, formidable, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/formidable/definitions/2009659>. |
| MLA | Webster's. "formidable" 27 May 2011. Web. 20 September 2026. <http://smartdefine.org/formidable/definitions/2009659> |