unpremeditated
🇺🇸
/ˌʌnpriːˈmedɪteɪtɪd/
🇬🇧
/ˌʌnpriːˈmedɪteɪtɪd/
Done without planning or thinking about it ahead of time.
Her unpremeditated response to the question caught everyone off guard.
그녀의 무심한 대답은 모두를 깜짝 놀라게 했다.