mental

1a :  of or relating to the mind; specifically :  of or relating to the total emotional and intellectual response of an individual to external reality mental healthb :  of or relating to intellectual as contrasted with emotional activity mental acuityc :  of, relating to, or being intellectual as contrasted with overt physical activity made quick mental calculationsd :  occurring or experienced in the mind :  inner mental anguish a mental breakdowne :  relating to the mind, its activity, or its products as an object of study :  ideological mental sciencef :  relating to spirit or idea as opposed to matter the distinction between physical things and mental ideas — J. W. Yolton

2a (1) :  of, relating to, or affected by a psychiatric disorder a mental patient (2) :  mentally disordered :  mad, crazy was going a bit mental from old age — Nevil Shuteb :  intended for the care or treatment of persons affected by psychiatric disorders mental hospitals

3 :  of or relating to telepathic or mind-reading powers mental telepathy