Which of the following is synonymous with 'cutting off'?

The term 'cutting off' most closely aligns with 'sever.' To sever something means to separate it or cut it off completely, often used in contexts where a definite and clean break is made. This can apply to physical objects, such as severing a rope, or more abstract concepts, like severing ties with someone. The implication is a definitive action that results in a complete disconnection or removal.

In contrast, while 'prune' can mean to cut off parts of a plant to promote healthy growth, it does not carry the same weight of finality as 'sever' and is often associated more with refinement than outright removal. 'Retard' generally refers to slowing down or delaying, with no direct connection to cutting off. 'Saturate' means to soak thoroughly and also does not relate to the idea of cutting or severing. Each of these alternative options conveys a different action or result that does not align with the specific meaning of 'cutting off' in the same definitive way that 'sever' does.