Transilient is an infrequently used word that means something transient or ephemeral in nature. Some synonyms that can be used in place of this word include fleeting, impermanent, passing, evanescent, momentary, and temporary. These are all words that describe something that is there for a short time, disappears quickly, or is not lasting. Other synonyms for transilient may include transient, quick, and volatile. These words are especially useful when talking about experiences, feelings, or emotions that are brief and quickly lose their intensity. Overall, using synonyms for transilient can help to add variety to our language and make our writing more vivid.