Le mot anglais pour hier est
yesterday

Définition en anglais

hier
1. adv. yesterday
2. adv. , t=(...) because it's up to us to change things for the better — a perhaps precarious better — and which could be stated by this maxim: better than nothing, better than yesterday, and better than tod
3. v. (obsolete) to stamp with a rod (hie)

yesterday	©
1. n. The day immediately before today; one day ago.
Today is the child of yesterday and the parent of tomorrow.
Yesterday was rainy, but by this morning it had begun to snow.
2. n. The (recent) past, often disparaging.
yesterday's technology
3. adv. On the day before today
I started to watch the video yesterday, but could only finish it this evening.
4. adv. As soon as possible
I want this done yesterday!