adj. 25B6; adjective
the accused is presumed to be sane : OF SOUND MIND, in one's right mind, compos mentis, lucid, rational, balanced, stable, normal; informal all there.
it isn't sane to use nuclear weapons : SENSIBLE, practical, advisable, responsible, realistic, prudent, wise, reasonable, rational, level-headed, commonsensical, judicious, politic.
mad, foolish.