preclude

1. v. To put a barrier before; hence, to shut out; to hinder; to stop; to impede. Source: opted

2. v. To shut out by anticipative action; to prevent or hinder by necessary consequence or implication; to deter action of, access to, employment of, etc.; to render ineffectual; to obviate by anticipation. Source: opted

3. v. keep from happening or arising; make impossible Source: wordnet

4. v. make impossible, especially beforehand Source: wordnet

5. 1. To put a barrier before; hence, to shut out; to hinder; to stop; to impede. The valves preclude the blood from entering the veins. E. Darwin. 2. To shut out by anticipative action; to prevent or hinder by necessary consequence or implication; to deter action of, access to, employment of, etc.; to render ineffectual; to obviate by anticipation. This much will obviate and preclude the objections. Bentley. Source: webster

6. v:100 v. make impossible, especially beforehand Source: ecdict

Thesaurus links