unrealistically
🇺🇸
/ˌʌnriːəˈlɪstɪkli/
🇬🇧
/ˌʌnrɪəˈlɪstɪkli/
in a way that is not based on reality or practicality
He set his goals unrealistically high, which led to disappointment.
그는 목표를 현실적이지 않게 높게 설정했고, 그 결과 실망을 초래했다.