The crossword solutions FOR the term 'ON THE SIDE OF' are ERR (3 letters), FOR (3 letters), WITH (4 letters), and INFAVOR (7 letters). This phrase is used to indicate support or agreement WITH a particular opinion, cause, or person. It can also be used to describe taking a particular side in an argument or dispute. FOR example, someone might say 'I'm on the side of justice' to indicate that they support justice and fairness. Additionally, someone might say 'I'm on the side of the environment' to indicate that they support environmental protection.