—adj. 1. of an unnatural or sickly pallor; pallid; lacking color: His wan face suddenly flushed. 2. showing or suggesting ill health, fatigue, unhappiness, etc.: a wan look; a wan smile. 3. lacking in forcefulness, competence, or effectiveness: their wan attempts to organize the alumni. 4. Archaic. a. dark or gloomy.
b. pale in color or hue.