The crossword solutions for the term PLAY A TRICK ON are 'DUPE' and 'FOOL'. The term 'DUPE' is derived from the French word 'duper', which means to deceive or trick. It is often used to describe someone who has been tricked or deceived. The term 'FOOL' is an old English word that has been used since the 14th century to describe someone who is easily tricked or deceived. Both terms refer to someone who has been tricked or deceived by another person.