Solve the mystery of ‘On the house’ with our crossword answer

The answer to the crossword question ‘On the house is FREE‘ is the word ‘complimentary‘. Complimentary refers to something that is given as a gesture of goodwill or courtesy, free of charge. When something is said to be ‘on the house‘, it means that it is being provided free of charge by the establishment or business that offers it. Thus, the clue ‘On the house is FREE‘ is a play on words, indicating that the answer is a synonym for ‘free‘ that specifically relates to something given as a gesture of goodwill or courtesy. Hence, the answer is ‘complimentary‘.