Mothballed is a term used to describe a process of preserving something or putting it aside for a long period. A few examples of synonyms for mothballed are "put on hold," "suspended," and "halted". These terms are used when something is temporarily stopped without being completely abandoned. Other synonyms include "shelved" which means temporarily put aside for future use, "parked" which is a more figurative expression, and "postponed" which indicates that something has been pushed back temporarily. All these synonyms represent the temporary cessation of activity or use but with the intention of resuming at a later date.