More necessary is a phrase that is often used when something becomes increasingly important. There are several synonyms for this phrase, and each of them can be used interchangeably to convey the same message. Some of the common synonyms for more necessary include crucial, imperative, vital, indispensable, critical, essential, and significant. These words carry a similar connotation and are often used in situations where something is required to be done without fail. Using synonyms can make your writing more interesting and help create a strong impact on the reader. However, it is essential to use them appropriately to ensure that they fit the context of your writing.