Fair and square is a commonly used phrase that expresses the concept of fair competition, honesty and ethical behaviour. It is a term used to describe a situation in which everything has been done in an impartial and just manner. However, there are many synonyms for this phrase, which can be used interchangeably in order to convey the same message. Some of the most commonly used synonyms include, justly, righteously, honourably, uprightly, fairly and equitably. Each of these synonyms captures the essence of the concept of being fair and square, and is a great way to emphasise the importance of integrity and ethical behaviour in any situation.