= mental calmness, composure, and evenness of temper, especially after a shock or disappointment or in a difficult situation
* muddy the waters = (À̾߱â, »çÅ µûÀ§¸¦) È¥¶õ½ÃŰ´Ù, ÆÄ¹®À» ÀÏÀ¸Å°´Ù
= to make a situation more confusing and complicated to understand or deal with