since
//sɪns//
Preposition
1
From a particular time in the past until now or until another time in the past.
I have lived here since 2010.
Conjunction
1
Because; for the reason that.
Since it was raining, we stayed inside.
2
From the time when; from the moment that.
I've been happy since I met you.
Adverb
1
From a particular time in the past until now; in the time after a past event.
He moved to Tokyo in 2015 and has lived there ever since.