Very annoying or objectionable; offensive or odious: “I know no method to secure the repeal of bad or obnoxious laws so effective as their stringent execution” (Ulysses S. Grant).

Archaic. Exposed to harm, injury, or evil: “The town... now lies obnoxious to its foes” (John Bunyan).

Archaic. Deserving of or liable to censure.