thankless
副词: thanklessly 名词: thanklessness
thankless基本解释
adj.不感谢的;忘恩的;吃力不讨好
thankless同义词
thankless相关例句
thankless英英释义
"ungrateful heirs""How sharper than a serpent's tooth it is / To have a thankless child!"
"grading papers is a thankless task"