Definition of Ephemeral: Ephemeral (adjective): Lasting for a very short time; transitory, fleeting. Synonyms: fleeting, temporary, transient, short-lived Antonyms: permanent, enduring, lasting, perpetual Memory Tip: Think of “ephemeral” like a butterfly’s lifespan—beautiful but very short-lived. Conversation and Short Story Examples Here is how “ephemeral” can be used in a casual conversation: Kate: Did you see…