- (v.t.) To make close; to fill up interstices in; as, to thicken cloth; to thicken ranks of trees or men.
- (v.t.) To make more frequent; as, to thicken blows.
- (v.t.) To make thick (in any sense of the word).
- (v.t.) To render dense; to inspissate; as, to thicken paint.
- (v.i.) To become thick.
- (v.t.) To strengthen; to confirm.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). thicken. Retrieved September 20, 2026, from http://smartdefine.org/thicken/definitions/2072069 |
| Chicago | Webster's. 2011. "thicken" http://smartdefine.org/thicken/definitions/2072069 (accessed September 20, 2026). |
| Harvard | Webster's 2011, thicken, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/thicken/definitions/2072069>. |
| MLA | Webster's. "thicken" 28 May 2011. Web. 20 September 2026. <http://smartdefine.org/thicken/definitions/2072069> |