The phrase "sold up" can have a variety of meanings, depending on the context of its use. Synonyms for this phrase can include "sold out", "liquidated", "disposed of", or "divested". These terms all imply a sense of having sold or gotten rid of something, whether it be a company, a property, or even personal belongings. Other possible synonyms could include "trimmed down", "did away with", or "cleared out". No matter which synonym is used, the general idea remains the same - the act of selling something until there is nothing left to sell.