Sue/suː/ Definition 1 of 3Pro Tip 1/3Legal Action Use 'sue' when you want legal remedy or compensation. She decided to sue the company for not providing a safe working environment. Pro Tip 2/3Serious Tone 'Sue' implies a serious conflict or issue that requires court intervention. After the accident, he sued for his extensive medical bills. Pro Tip 3/3Financial Claim Often, to 'sue' means seeking financial compensation. Victims sued the manufacturer for selling a defective product.