uncertain

Not knowing whether something is true or will happen; not clearly known.

• The result is uncertain.
• I am uncertain whether she will come.
• They faced an uncertain future after the factory closed.

How to use it: uncertain about something (She is uncertain about the results.); uncertain whether… (We are uncertain whether the road is open.)

Similar words: unsure, doubtful

Opposites: certain, sure

Common phrases: uncertain about something, uncertain future, remain uncertain

Not yet decided or fixed.

• The date is still uncertain.
• Our travel plans remain uncertain.
• She was uncertain about which offer to accept.

How to use it: uncertain about something (He is still uncertain about which course to choose.)

Similar words: undecided, unsettled

Opposites: decided, settled

Common phrases: uncertain date, uncertain plans, still uncertain

Something that is not known or cannot be relied on.

• We must face the uncertain.
• She learned to live with the uncertain.
• His poems explore the boundary between the certain and the uncertain.

Similar words: unknown

Opposites: certain

Common phrases: the uncertain, embrace the uncertain