Definition of yesterday
- I wasn't born yesterday
It rained heavily yesterday afternoon.
I mailed the application early yesterday morning.
It was good to see you yesterday.
First Known Use: before 12th centurySee Words from the same year
Yesterday's game was canceled because of the rain.
The radio program features yesterday's songs as well as today's.
Today's cars aren't all that different from the models of yesterday.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'yesterday.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
before 12th century
: the day before today
: a time in the past : the time of previous years
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