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English definition of “since”

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since

adverb [not gradable]  /sɪns/ us  

since adverb [not gradable] (TIME)

from a particular time in the past until now: Alfredo left the house at six this morning, and we haven’t seen him since. I got my first job in 1973 and I’ve been working ever since (= from then until now).
Idioms

since

preposition  /sɪns/ us  

since preposition (TIME)

in the time after a particular time in the past: A lot has happened since 1980.

since

conjunction  /sɪns/ us  

since conjunction (BECAUSE)

because; as: Since you’ve asked, I’ll tell you what I really think.

since conjunction (TIME)

from the time in the past when: It’s been more than two years since we moved back to New York.
Translations of “since”
in Korean -이후, -때 부터…
in Arabic مُنْذ…
in French depuis (que), depuis que, puisque…
in Turkish ...dan/den beri…
in Italian da…
in Chinese (Traditional) 此後,從此…
in Russian с, с тех пор, после…
in Polish od (czasu), od tego czasu…
in Spanish desde que, después que, ya que…
in Portuguese desde…
in German seit, seitdem, da…
in Catalan des de…
in Japanese (過去のある地点)からずっと, ~以来…
in Chinese (Simplified) 此后,从此…
(Definition of since from the Cambridge Academic Content Dictionary © Cambridge University Press)
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