1. A very short time (as the time it takes the eye to blink or the heart to beat)
   - flash, heartbeat, instant, jiffy, split second, trice, twinkling, wink, New York minute, jiff

Type of: bit, minute, mo, moment, second

• underdo
• underdog
• underdone
• underdrawers
• underdress
• underdressed
• undereducated
• underemployed
• underemployment
• underestimate
• underestimation
• underevaluation
• underexpose
• underexposure
• underfed
• underfeed
• underfelt
• underfoot
• underframe
• underfur
• undergarment
• undergird
• underglaze
• undergo
• undergrad