← BackshareGuessunwise/ʌnˈwaɪz/adjectiveNot showing good judgment; foolish or imprudent.She realized it was unwise to drive home after only two hours of sleep.The mayor's unwise comments angered many community members.It would be unwise to invest all your money in one company.SynonymsrecklessfoolishimprudentAntonymswiseprudent