ungrateful   (TTS Sound)

The ungrateful has 2 Senses.

• thankless, unthankful, ungrateful
• 恩知らず
• not feeling or showing gratitude; "ungrateful heirs"; "How sharper than a serpent's tooth it is / To have a thankless child!"- Shakespeare
• 謝意を感じない、または示さないさま

• ungrateful
• 恩知らず
• disagreeable; "I will not perform the ungrateful task of comparing cases of failure"- Abraham Lincoln
• 好みに合わない