The German word "formel" typically translates to "formal" or "official" in English. However, there are various synonyms that can be used to describe the same concept. For instance, "rigoros", which means "rigorous", or "konventionell", which means "conventional", can be used to describe formal or official procedures. Similarly, "verbindlich", which means "binding", or "verpflichtend", which means "mandatory", can be used to describe formal agreements or contracts. Other synonyms for "formel" include "ziemlich", meaning "quite", or "recht", meaning "right", both of which can be used to describe something that is done in a formal or official manner.