1 grieved

2 sorrowful

1 to complain

2 to grumble

3 to harbor a complaint

4 to feel dissatisfied

1 to work hard without complaint (idiom)

1 Ai (c. 2000 BC), sixth of legendary Flame Emperors 炎帝[Yán dì] descended from Shennong 神農|神农[Shén nóng] Farmer God, also known as Li 釐|厘[Lí]

1 grief

2 distress

3 bereavement

4 grieved

5 heartbroken

6 dejected

1 begging for pity and asking for help (idiom)

1 to return good for evil (idiom)

2 to requite evil with good

1 to repay kindness with kindness, and repay enmity with justice (idiom, from Analects)

1 to work hard without complaint (idiom)

1 an army burning with righteous indignation is bound to win (idiom)