"Doei" is a popular way of saying goodbye in Dutch. However, there are numerous synonyms for this word that can be used in different contexts or to give a more personal touch. Some of the most commonly used synonyms for "doei" include "vaarwel," "tot ziens," "dag," "smell ya later," "later," "houdoe," "adios," "au revoir," "ciao," and "see you." Each of these words can be used to say goodbye in a more meaningful way, and some of them may be more appropriate in formal situations. Whatever the context, there is always a suitable synonym for "doei" that you can use to say goodbye in a way that feels comfortable to you.