"Loss" is a commonly used synonym for the word "lose". Other words that can be used to express the same idea include "mislay", "misplace", "drop", "forfeit", "surrender", and "give up". "Fail" and "be defeated" are additional synonyms that focus more on the idea of failure and defeat rather than specifically misplacing something. "Waste" can also be considered a synonym for "lose" when referring to losing time, money or resources. Synonyms can be useful tools in writing, offering writers alternatives to the same words and enforcing clarity and precision in communication.