noun🔗ShareAn insane person."After shouting at the wall and claiming to be talking to aliens, the neighbors worried he was a lunatic. "mindpersonmedicineChat with AIVocabulary GamePractice Reading
adjective🔗ShareCrazed, mad, insane, demented."The teacher felt the student's behavior was quite lunatic; he was running around the classroom, shouting nonsense. "mindcharacterconditionChat with AIVocabulary GamePractice Reading
