unthankfulness

英['ʌn'θæŋkfəl] 美[ʌn'θæŋkfəl]
  • adj.不感谢的;不感恩的;不知感谢的
Adjective:
  1. not feeling or showing gratitude;

    "ungrateful heirs"
    "How sharper than a serpent's tooth it is / To have a thankless child!"

【邻近词汇】