adj. phr. I owe you, abbreviated; a promissory note. I had to borrow some money from John and, in order to remind both of us, I wrote him an I.O.U. note for $250.
An I.O.U. idiom dictionary is a great resource for writers, students, and anyone looking to expand their vocabulary. It contains a list of words with similar meanings with I.O.U., allowing users to choose the best word for their specific context.
Dictionary of similar words, Different wording, Synonyms, Idioms for Idiom, Proverb I.O.U.