Synonyms and related words :
admissible, all there, balanced, bright, bunkum, clearheaded, clearminded, cogent, commonsense, compelling, compos mentis, conceptive, conceptual, convincing, cool, coolheaded, credible, discursive, down-to-earth, earthy, fit, good, hale, hardheaded, healthy-minded, ideational, intellectual, intelligent, judicious, just, justifiable, knowing, legitimate, level-headed, levelheaded, logical, lucid, matter-of-fact, mentally sound, noetic, normal, not so dumb, of sound mind, oriented, philosophical, plausible, positivistic, practical, practical-minded, pragmatic, prudent, rational, realist, realistic, reasonable, right, right-minded, sage, sane-minded, sapient, scientific, scientistic, secular, sensible, sober, sober-minded, sophic, sound, sound-minded, sound-thinking, straight-thinking, strong-minded, together, understanding, unideal, unidealistic, unromantic, unsentimental, well, well-argued, well-balanced, well-founded, well-grounded, wholesome, wise, worldly