A deep-freeze hostess-trolley is a kitchen appliance that helps you serve hot or cold food to guests while keeping it fresh in a deep-freeze compartment. If you are looking for synonyms for this term, you could consider using terms like portable freezer, mobile food server, or food trolley. These synonyms reflect the features of a deep-freeze hostess-trolley and can help you convey the message effectively. Other possible terms include catering trolley, rolling chiller, or refrigerated food cart, which also express similar ideas. Overall, using synonyms can improve your communication and help you convey your message more accurately.