Since

1. наречие 1) обычно ever since с тех пор Например: She has stayed there ever since. — С тех пор она и была там. He has been healthy ever since. — С тех пор он больше не болел. 2) тому назад Например: He went out a little while since. — Он вышел совсем недавно. Синоним(ы): ago 3) а) впоследствии, позднее, позже, потом Например: He has since become rich. — Впоследствии он разбогател. This idea was dimly felt at the time and has been more distinctly recognised since. — Эта идея витала в воздухе в те времена, но отчётливо рассмотреть её смогли лишь позже. Синоним(ы): subsequently б) сразу же после, непосредственно после Синоним(ы): then, thereupon 2. предлог 1) то же, что и ever since - с, начиная с Например: since earliest times — с древнейших времён since times immemorial — с незапамятных времён 2) после; после того, как... Например: They seem to have changed since then. — Кажется, что с того времени они изменились. 3. союз 1) то же, что и ever since - с тех пор как Например: She has held two jobs since she graduated. — Она сменила две работы с тех пор, как окончила учёбу. 2) так как Например: Since he is still absent, we should call the police. — Поскольку его всё ещё нет, нам следует вызвать полицию. Синоним(ы): because 3) [устаревшее] когда Синоним(ы): because

Большой англо-русский словарь

Since

I. adverb Etymology: Middle English sins, contraction of sithens, from sithen, from Old English siththan, from sīth tham after that, from sīth after, late + tham, dative of thæt that; akin to Old High German sīd later and perhaps to Latin setius to a lesser degree 1. from a definite past time until now Example: has stayed there ever since 2. before the present time; ago Example: long since dead 3. after a time in the past; subsequently Example: has since become rich II. conjunction 1. at a time in the past after or later than Example: has held two jobs since he graduated; from the time in the past when Example: ever since I was a child 2. obsolete when 3. in view of the fact that; because Example: since it was raining she took an umbrella III. preposition in the period after a specified time in the past; from a specified time in the past

Merriam-Webster's Collegiate Dictionary