Favouring is a term used to describe the act of showing partiality or bias towards someone or something. It is often used in the context of giving preferential treatment to one person or group over another. The three-letter acronym PRO is an abbreviation for the word 'PROFESSIONAL', which is often used to describe someone who is highly skilled and experienced in their field. Therefore, the crossword solutions for the term favouring could be interpreted as showing favouritism to a PROFESSIONAL.