毋忘

位卑未敢忘忧国 wèibēiwèigǎnwàngyōuguó

humble in rank, I dare not forget to worry about my country / lowly though my position is, I never dare forget the nation's troubles

不如相忘于江湖 bùrúxiāngwàngyújiānghú

better to forget each other amid the rivers and lakes / (fig.) when two can no longer sustain each other up close, parting into freedom beats clinging together / (lit.) not as good as mutually-forgetting in rivers-and-lakes

家祭无忘告乃翁 jiājìwúwànggàonǎiwēng

when you hold the family sacrifice, do not forget to tell your old father / Lu You's dying instruction to his sons: report to me when China is reunited / unshakable patriotism even beyond the grave

忘掉 wàngdiào HSK 7 #3,373

to forget completely; to put out of one's mind

忘记 wàngjì HSK 1 #858

to forget

忘 wàng HSK 1 #469

to forget

遗忘 yíwàng HSK 7 #5,144

to forget / to overlook; to neglect

毋 wú #23,056

do not / must not / no (classical prohibitive)

见利忘义 jiànlìwàngyì

to abandon moral principles for profit / to forget righteousness at the sight of gain

前事不忘 qiánshìbùwàng

not forgetting past events / remembering the lessons of history