uncertainty

certain certain bein

uncertainty n.

無常, 不確定, 不可靠, 半信半疑

英英解釋:名詞uncertainty:
1. being unsettled or in doubt or dependent on chance
同義詞：uncertainness, precariousness
2. the state of being unsure of something
同義詞：doubt, incertitude, dubiety, doubtfulness, dubiousness