a system of working that allows an employee to choose, within limits, the hours for starting and leaving work each day.
Also flex·i·time [flek-si-tahym] /ˈflɛk sɪˌtaɪm/.
Origin of flextime
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
a system permitting flexibility of working hours at the beginning or end of the day, provided an agreed period of each day (core time) is spent at work
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Online Etymology Dictionary, © 2010 Douglas Harper