1. Lasting a very short time
   - ephemeral, passing, short-lived, transient, transitory, fugacious, here today and gone tomorrow

See also: impermanent, temporary

• 42
• 42nd
• 43
• 43rd
• 44
• 440 yards
• 44th
• 45
• 45th
• 46
• 46th
• 47
• 47th
• 48
• 48th
• 49
• 49th
• 4th
• 4to
• 4WD
• 5
• 5-hitter
• 5-hydroxy-3-methylglutaryl-coenzyme A reductase
• 5-hydroxytryptamine
• 5-membered