fog up
Intermediate (B1) neutral
Get covered in mist or steam so you can't see through it — like glasses or a car windscreen.
"My glasses fogged up the moment I walked into the warm kitchen from the cold."
Hear it in context
The Boys Cast Reveal Uncomfortable Truths in the Hot Seat | Vanity Fair
Vanity Fair · 13:46
and the goggles fog up.
David Blaine: Do Not Attempt MEGA Episode | Arctic Circle, Brazil, SE Asia | National Geographic
National Geographic · 103:36
You, your goggles might fog up.
Meryl Streep on Excitement for The Devil Wears Prada 2, Calling Lady Gaga & Being a Grandma
Jimmy Kimmel Live · 13:45
You know, you're making my glasses fog up.
knowing when to quit
anything goes with emma chamberlain · 31:47
It's like foggy foggy fog up there right now.