It may be proper' is a phrase that refers to the idea of being polite or respectful in a given situation. The crossword solution for this term is 'etiq, ' which is a shortened form of the word 'ETIQUETTE.' ETIQUETTE refers to the rules of behavior that are considered appropriate in a particular society or culture. It can also refer to the way people interact with each other in order to maintain harmony and avoid offending each other.