Synonyms of the word

ephemeron

• n. something short lived or transitory.

ephemeral

• n. Something which lasts for a short period of time.
• adj. Lasting for a short period of time.
• adj. (biology) Existing for only one day, as with some flowers, insects, and diseases.
• adj. (geology, of a body of water) Usually dry, but filling with water for brief periods during and after precipitation.

insect

• n. An arthropod in the class Insecta, characterized by six legs, up to four wings, and a chitinous exoskeleton.
• n. (colloquial) Any small arthropod similar to an insect including spiders, centipedes, millipedes, etc.
• n. (derogatory) A contemptible or powerless person.