All certain antonyms
cer·tain
C c pronoun certain
- all — You use all to indicate that you are referring to the whole of a particular group or thing or to everyone or everything of a particular kind.
adj certain
- indefinite — not definite; without fixed or specified limit; unlimited: an indefinite number.
- uncertain — not definitely ascertainable or fixed, as in time of occurrence, number, dimensions, or quality.
- unsure — not certain or confident: He arrived at the party unsure of his welcome.
- hesitant — hesitating; undecided, doubtful, or disinclined.
- questionable — of doubtful propriety, honesty, morality, respectability, etc.: questionable activities; in questionable taste.
- unreliable — not reliable; not to be relied or depended on.
- undecided — not decided or determined.
- unpredictable — not predictable; not to be foreseen or foretold: an unpredictable occurrence.
- doubtful — of uncertain outcome or result.
- unconfident — lacking self-assurance
- dubious — doubtful; marked by or occasioning doubt: a dubious reply.
- faltering — to hesitate or waver in action, purpose, intent, etc.; give way: Her courage did not falter at the prospect of hardship.
- unfixed — to render no longer fixed; unfasten; detach; loosen; free.
- dishonest — not honest; disposed to lie, cheat, or steal; not worthy of trust or belief: a dishonest person.
- counterfeit — Counterfeit money, goods, or documents are not genuine, but have been made to look exactly like genuine ones in order to deceive people.
- unreal — not real or actual.
- unclear — free from darkness, obscurity, or cloudiness; light: a clear day.
- indistinct — not distinct; not clearly marked or defined: indistinct markings.
- vague — not clearly or explicitly stated or expressed: vague promises.
- false — not true or correct; erroneous: a false statement.
- invalid — an infirm or sickly person.
- doubted — to be uncertain about; consider questionable or unlikely; hesitate to believe.
- obscure — (of meaning) not clear or plain; ambiguous, vague, or uncertain: an obscure sentence in the contract.
- inexact — not exact; not strictly precise or accurate.
- unimportant — of much or great significance or consequence: an important event in world history.
- usual — habitual or customary: her usual skill.
- imprecise — not precise; not exact; vague or ill-defined.
- general — of or relating to all persons or things belonging to a group or category: a general meeting of the employees.
- common — If something is common, it is found in large numbers or it happens often.
- ordinary — of no special quality or interest; commonplace; unexceptional: One novel is brilliant, the other is decidedly ordinary; an ordinary person.