Wordreference random house unabridged dictionary of american english © 2025 in•sane (in sän′), adj. Not of sound mind; Mentally deranged.

(not in technical use as a medical diagnosis) not sane; Not of sound mind; Mentally deranged. See examples of insane used in a sentence. Define insane. Insane synonyms, insane pronunciation, insane translation, english dictionary definition of insane. Afflicted with mental derangement, having a disordered mind, mad:

Define insane. Insane synonyms, insane pronunciation, insane translation, english dictionary definition of insane. Afflicted with mental derangement, having a disordered mind, mad: Her bizarre threats … The meaning of insane is exhibiting a severely disordered state of mind. How to use insane in a sentence. Very annoyed, angry, upset, or excited, often so that you cannot think or behave normally: Learn more. Insane refers to a state of severe mental illness or mental disorder, characterized by a significant impairment in one's ability to think, reason, or perceive reality. It is often marked by unpredictable or … If you describe a decision or action as insane, you think it is very foolish or excessive.

How to use insane in a sentence. Very annoyed, angry, upset, or excited, often so that you cannot think or behave normally: Learn more. Insane refers to a state of severe mental illness or mental disorder, characterized by a significant impairment in one's ability to think, reason, or perceive reality. It is often marked by unpredictable or … If you describe a decision or action as insane, you think it is very foolish or excessive.

It is often marked by unpredictable or … If you describe a decision or action as insane, you think it is very foolish or excessive.