off ‧ line /ˌɒfˈlaɪn◂ $ ˌɒːf-/ BrE AmE adverb
1 . with your computer not connected to the Internet OPP online :
I work offline most of the day.
2 . if computer equipment is offline, it is not directly connected to the computer OPP online :
The printer was offline all morning.
—offline adjective :
offline storage