The crossword solution for the term 'ADIEU' (said goodbye to) is 'BADE'. ADIEU is a French phrase meaning 'to God' and is used as a formal way of saying goodbye. It is often used in situations where a permanent farewell is being said, such as when someone is leaving a job or a place they have been living for a long time. BADE is an archaic form of the verb 'BID', which means to command or request. Therefore, BADE can be used to mean 'said goodbye to'.