The term 'Until We Meet Again!' can be expressed in several ways. The four-letter word 'CIAO' is an informal Italian greeting that is used to say both hello and GOODBYE. The five-letter word 'ADIEU' is a French phrase meaning 'FAREWELL' or 'GOODBYE'. The eleven-letter word 'SeeYouLater' is an informal way of saying GOODBYE, implying that the speaker will see the other person again soon. All three of these terms express the sentiment of parting with the hope of reuniting in the future.