The opposite of "more deliquescent," which means more prone to melting or dissolving in moisture, would be "less deliquescent." This term refers to substances that are less likely to dissolve or disintegrate when exposed to water or humidity. Polymers, such as polyethylene and polypropylene, are good examples of materials that exhibit reduced deliquescence. While more deliquescent substances such as sodium hydroxide, potassium hydroxide, and calcium chloride must be stored in sealed containers or desiccators to maintain their potency, less deliquescent solids, powders, or liquids require only minimal protection from moisture. Therefore, understanding antonyms of a word can help in identifying contrasting or opposing qualities, characteristics, or attributes to aid in effective communication.