unproductive

secondary

Kyūjitai form of 初歩的

(chiefly Internet slang) thinking with common sense

(linguistics) diachronic

(linguistics) synchronic

unsociable; retiring; solitude-loving

color / one's facial coloring or expression / the shape of one's face or appearance; more specifically, beautiful looks or a beautiful figure / lively elegance, enjoyable or interesting charm

(archaic) of exceptional beauty of form or appearance / (archaic) knowledgeable about lovemaking, sensual; lascivious, lecherous / (archaic) elegant, tasteful, refined

of that tone or timber or mood / relating to a love affair or the red light district / relating to type or kind