| Definitions | noun
- The day before today.
- Yesterday was rainy, but by this morning it had begun to snow.
- The (recent) past, often disparaging.
- Yesterday's technology.
- All our yesterdays have lighted fools the way to dusty death. Shakespeare, Macbeth, Act 5, Scene 5
Translations: - Dutch: gisteren(nl)
- French: hier(fr)
- German: gestern(de)
- Spanish: ayer(es)
adverb
- On the day before today
- I started to watch the video , but could only finish the movie this evening.
Translations: - Dutch: gisteren(nl)
- French: hier(fr)
- German: gestern(de)
- Italian: ieri(it)m
- Spanish: ayer(es)m
Etymology: From Middle English < Old English geostran díg, compounded from geostran (yesterday) < Proto-Germanic < Proto-Indo-European ghes; + Middle English day < Old English díg < Proto-Germanic dagaz < Proto-Indo-European dhegh- (to burn).

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