Severings is not a common word in English language, thus it is not surprising that there is a lack of synonyms for it. The term is likely used in certain specialized fields such as biology or medicine. In such contexts, the word severings may refer to the act of severing or separating a part of an organism or a tissue from the rest. Possible synonyms could include cutting, detachment, amputation, abscission, or excision. However, the choice and usage of a specific term may depend on the specific context and the type of severing that is intended.