- (a.) Lacking some of the usual forms of declension or conjugation; as, a defective noun or verb.
- (a.) Wanting in something; incomplete; lacking a part; deficient; imperfect; faulty; -- applied either to natural or moral qualities; as, a defective limb; defective timber; a defective copy or account; a defective character; defective rules.
- (n.) Anything that is defective or lacking in some respect.
- (n.) One who is lacking physically or mentally.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). defective. Retrieved September 20, 2026, from http://smartdefine.org/defective/definitions/1995315 |
| Chicago | Webster's. 2011. "defective" http://smartdefine.org/defective/definitions/1995315 (accessed September 20, 2026). |
| Harvard | Webster's 2011, defective, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/defective/definitions/1995315>. |
| MLA | Webster's. "defective" 27 May 2011. Web. 20 September 2026. <http://smartdefine.org/defective/definitions/1995315> |