Dually is a word that describes something that is done or has two aspects. If you are writing something and want to use a word other than dually, there are several synonyms available. Firstly, the word "twofold" means twice as much or double, so it can be used as a synonym for dually. "Bifurcated" is another useful synonym, which means something is divided into two parts. "Duplex" is a synonym that describes something that is made up of two parts or layers. Finally, the word "dualistic" can be used to describe something that has two often conflicting aspects, actions or ideas.