since
Pronunciation:
/sɪns/adverb
Definitions
From a specified time in the past.
Example: A short/long time since
preposition
Definitions
From: referring to a period of time ending in the present and defining it by the point in time at which it started, or the period in which its starting point occurred.
conjunction
Definitions
From the time that.
Example: I have loved you since I first met you.
Because.
Example: Since you didn't call, we left without you.
When or that.