acumen

[Relating to intellect] intellectual, mental, rational, subjective, metaphysical, nooscopic, spiritual; ghostly; psychical, psychological; cerebral; animastic; brainy; hyperphysical, superphysical; subconscious, subliminal., immaterial; endowed with reason.

[Applied to persons] intelligent, quick of apprehension, keen, acute, alive, brainy, awake, bright, quick, sharp; quick witted, keen witted, clear witted, sharp-eyed, sharp sighted, sharp witted; wide-awake; canny, shrewd, astute; clear-headed; farsighted; discerning, perspicacious, penetrating, piercing; argute; nimble-witted, needle-witted; sharp as a needle; alive to (cognizant); clever (apt); arch (cunning); pas si bete; acute., wise, sage, sapient, sagacious, reasonable, rational, sound, in one's right mind, sensible, abnormis sapiens, judicious, strong-minded., unprejudiced, unbiased, unbigoted, unprepossessed; undazzled, unperplexed; of unwarped judgment, impartial, equitable, fair., cool; cool-headed, long-headed, hardheaded, strong-headed; long-sighted, calculating, thoughtful, reflecting; solid, deep, profound.

judging; judicious (wise); determinate, conclusive.

present; occupying, inhabiting; moored; resident, residentiary; domiciled., ubiquitous, ubiquitary; omnipresent; universally present., peopled, populous, full of people, inhabited.

sane, rational, reasonable, compos mentis, of sound mind; sound, sound-minded; lucid., self-possessed; sober, sober-minded., in one's sober senses, in one's right mind; in possession of one's faculties.

smooth; polished; leiodermatous, slick, velutinous; even; level; plane (flat); sleek, glossy; silken, silky; lanate, downy, velvety; glabrous, slippery , glassy, lubricous, oily, soft, unwrinkled; smooth as glass, smooth as ice, smooth as monumental alabaster, smooth as velvet, smooth as oil; slippery as an eel; woolly (feathery).