The word demandable means something that is required or expected and can be demanded by someone. Some common synonyms for the word demandable include obligatory, necessary, mandatary, and requisite. Other similar terms might be compulsory, essential, vital, or indispensable. These words all convey a sense of something that is needed or expected from someone or something else. When we use the word demandable in a sentence, we are expressing a level of urgency and importance that highlights the need for action or attention. By understanding the synonyms for this word, we can better communicate the sense of obligation or necessity that it conveys.