辱 is a bound morpheme — it almost never appears alone in modern Chinese. Common compounds: 侮辱 (wǔrǔ, to insult), 耻辱 (chǐrǔ, shame/disgrace), 凌辱 (língrǔ, to humiliate), 受辱 (shòurǔ, to be humiliated).
history
The idiom 忍辱负重 (rěnrǔfùzhòng, to endure humiliation while bearing a heavy burden) comes from the Three Kingdoms period, describing figures who swallowed their pride for a greater cause.
