like clockwork
US /laɪk ˈklɑːk.wɜːrk/
UK /laɪk ˈklɑːk.wɜːrk/
1.
with perfect regularity and predictability
:
•
Every morning, the train arrives like clockwork at 7:00 AM.
•
The whole operation ran like clockwork, without any hitches.
with perfect regularity and predictability