Definition of up to
1 —used as a function word to indicate extension as far as a specified place sank up to his knees in the mud
2 —used as a function word to indicate a limit or boundary up to 50,000 copies a month worked up to the last minute
First Known Use of up to
Seen and Heard
What made you want to look up up to? Please tell us where you read or heard it (including the quote, if possible).