up-to-date, up to date, adjective, /'ʌptə'det /
1
including all the latest information.
up-to-date information/data/figures/news etc
They have access to up-to-date information through a computer database.
keep/bring somebody up to date (=to give someone all the newest information about something)
Our magazine will keep you up to date with fashion.
2
modern or fashionable. based on or using the newest information, methods, etc.
up-to-date equipment/facilities/technology etc
up-to-date kitchen equipment.
keep/bring something up to date (=to make something more modern)
The old system should be brought up to date.
up-to-date styles up-to-date [=modern] methods.
out-of-date, adjective, /ˌaʊtəvˈdeɪt/
1
if information is out-of-date, it is not recent and may no longer be correct.
The information in the tourist guide is already out-of-date.
2
if something is out-of-date, it is no longer considered useful or effective, because something more modern exists.
Their manufacturing methods are hopelessly out-of-date.
3
an official document that is out-of-date cannot be used because the period of time for which it was effective has finished.
an out-of-date passport.
