Yesterday is the day before today. People also use it more loosely to talk about the recent past.
“Yesterday” comes from Old English “giestrandæg,” made from “gēostran” (yester, meaning “previous”) and “dæg” (day). Over time, the parts blended into the single word we use now.
“Yesterday” literally means “previous day,” but it often carries emotional weight—memories, regrets, or nostalgia. That’s why it shows up so often in songs and poems about the past.
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