◎ 韬晦 tāohuì

(1) [refrain from revealing one's ambitions and put others off the track]∶韬,韬光;晦,晦迹。韬晦,即收敛锋芒,隐藏不露

愈事韬晦,群居游处,赤尝有言。——《唐书·宣宗纪》

(2) [dark;gloomy]∶阴暗无光;阴晦