Anything; any part or item; by any chance; in any respect (considered to be literary and old-fashioned): For aught I know, he could have left an hour ago.

The figure "0"; a cipher of zero: Manfred had aught, or zero, money available to pay for the bread.

1. Nothing, nonexistent, insignificant; zero, a cipher; worthless, useless: All of the committee's work was for naught.
2. Zero (usually a naught): All of the experts efforts to complete the project on time was for naught.

1. Behaving disobediently or mischievously: His mother called him a naughty boy because he tracked mud into the house without even trying either to take his shoes off or at least trying to clean them before going in.
2. Used especially to describe a child who does not behave properly or does not obey a parent, teacher, etc.: The mother received a call from the principal of her daughter's school saying that the girl was naughty because she wouldn't quit talking while the teacher was trying to explain how to do arithmetic problems.
3. As a play on the word: a reference to anything with a zero, or zeros: Years that include zeros can be described as being naughty years; not because they behaved badly or were disobedient, but because they include "naughts or numbers with zeros".

1. Used to indicate what is expected: Tom mentioned, "They ought to be here by now and you ought to be able to read this book until they arrive."
2. Used to say or to suggest what should be done: Jane told her daughter, "You ought to get some rest now and then after that you ought to do your homework."