1uncertain (about/of sth) not sure; not able to decide 不肯定的;不能决定的:
She was still uncertain of his true feelings for her.她仍然不能肯定他对自己的真实感受如何。
2 not known exactly or not decided 不确知的;未决定的:
He's lost his job and his future seems very uncertain.他失业了,前途看来很不明朗。 [OPP] certain 反义词为certain➔uncertainlyadv➔uncertaintynoun [C,U] (pluraluncertainties)
Today's decision will put an end to all the uncertainty.今天的决定将把所有不明朗的因素来个了结。 [OPP] certainty 反义词为certainty