untiring
🇺🇸
/ʌnˈtaɪərɪŋ/
🇬🇧
/ʌnˈtaɪərɪŋ/
adjective
R
working hard and not getting tired easily
The teacher was untiring in her efforts to help every student succeed.
先生は、すべての生徒が成功するために努力を怠らなかった。
translation
不憚な