IPA: //ˈflɛkstaɪm//
KK: /ˈflɛkstaɪm/
A work schedule that allows employees to choose their starting and ending times within certain limits.
Many companies offer flextime to help employees balance their work and personal lives.
Flextime is formed from "flex" (from Latin "flectere", meaning to bend) and "time" (from Old English "tima", meaning a period or duration). The term refers to a work schedule that allows employees to choose their working hours, thus 'bending' the traditional time constraints.
Think of 'bending' ('flex') the usual 'time' schedule — that's what flextime means.
No commonly confused words.