adj. Function: adjective
1 not likely to be true or to occur FF1C; the immediate success of their plan is improbable FF1E;
Synonyms: doubtful, dubious, questionable, unlikely
Antonyms: probable
2
Synonyms: IMPLAUSIBLE , flimsy, inconceivable, incredible, thin, unbelievable, unconceivable, unconvincing, unsubstantial, weak