since

US /sɪns/
UK /sɪns/
"since" picture
1.

from a definite past time until now

:
I haven't seen her since last year.
He has been working here since 2010.
1.

from the time when

:
It's been a long time since we last met.
Many things have changed since I left.
2.

because; as

:
Since you're busy, I'll leave now.
Since it's raining, we should stay inside.
1.

from that time until now

:
He moved away, and I haven't seen him since.
She got a new job and has been much happier since.