- 辛辛苦苦 xīnxīnkǔkǔ painstakinglywith great trouble or effort; to go through much toil or hardship
- 苦苦哀求 kǔkǔ'āiqiú to entreat piteouslyto beg bitterly or implore urgently; to entreat someone repeatedly and piteously
- 苦苦相逼 kǔkǔxiāngbī to force persistentlyto press or compel someone relentlessly; to harass or pressure someone without stopping