unsure

同义词：

uncertain | doubtful | irresolute | unsteady | precarious | debatable | fearful | aimless | shy | unconvinced | dubious | suspicious | undecided | skeptical | sceptical | unconfident | hesitant | insecure | diffident | incertain | timid |

反义词：

sure |

词义辨析：

同义参见:

precarious

doubtful

irresolute

unsteady

aimless

uncertain

debatable

fearful

反义:

a.不肯定的

sure

反义参见:

confident