uncertain 
无常的 ☊ → 不确定的 ☊ → ☊ → 
uncertain 
incertitude ☊ 
không chắc chắn like: uncertain → →
unclear, uncertain conditions ☊ 
hoàn cảnh mập mờ ☊ under unclear, uncertain conditions ☊ trong hoàn cảnh mập mờ ☊ make a positive affirmation on uncertain grounds ☊ đoán già ☊ Her future is uncertain. ☊ future ☊
The future by its very nature is uncertain. ☊ nature ☊
a period of consultation/mourning/uncertainty ☊ period ☊
They're both uncertain about what to do. ☊ uncertain ☊
I'm still uncertain of my feelings for him. ☊ uncertain ☊
Our future looks uncertain. ☊ uncertain ☊
a man of uncertain temper ☊ uncertain ☊
It is uncertain what his role in the company will be. ☊ uncertain ☊
incertitude ☊ cette incertitude est pesante pour nous ☊
incertain ☊ la frontière qui les sépare est incertaine ☊