unlikely
Definitions
Not likely to happen, be done, or be true; improbable.
Not promising or hopeful; unpromising.
Not expected to become or be; not suitable.
Examples
It is highly unlikely that it will rain during the outdoor wedding ceremony.
Given his lack of experience, it is unlikely that he will be selected for the promotion.
Synonyms
improbable doubtful implausible questionable remote dubious far-fetched
Antonyms
likely probable plausible certain expected believable credible