ungrateful - not respecting or appreciating someone who has helped you or been kind to you - อกตัญญู, เนรคุณ, ไม่สำนึกบุญคุณ
ungrateful - not respecting or appreciating someone who has helped you or been kind to you - อกตัญญู, เนรคุณ, ไม่สำนึกบุญคุณ