সঠিক উত্তর হচ্ছে: doubtful
ব্যাখ্যা:
Definite : clearly stated or decided; not vague or doubtful.
Doubtful : feeling uncertain about something.
Regrettable : (of conduct or an event) giving rise to regret; undesirable; unwelcome.
Questionable : doubtful as regards truth or validity.
Unpredictable : not able to be predicted; changeable.
Antonym of
Definite is
Doubtful