sane
adjective
1 an accused person is presumed to be sane until they can prove the contrary:
of sound mind, right in the head, in one's right mind, in possession of all one's faculties, able to think/reason clearly, lucid, clear-headed, rational, coherent, balanced, well balanced, stable, normal;
Latin compos mentis;
informal all there.
▷antonyms insane, mad.
sane Oxford Dictionary of English