The term 'by reason of' is a phrase used to indicate the cause or justification FOR something. It can be broken down into five different crossword solutions: FOR (3 letters), BECAUSE (7 letters), SINCE (5 letters), ERGO (4 letters), and DUETO (5 letters). Each of these words can be used to explain why something has happened or why something is true. FOR example, one might say 'I'm late to work BECAUSE my car wouldn't start, ' or 'I'm going to the store SINCE I need to buy groceries.' ERGO is a Latin word meaning 'THEREFORE, ' and dueto is a Spanish word meaning 'due to.' All of these words can be used to explain the cause of an event or situation.