[sɪns], (Adposition)

Definitions:
- in the intervening period between (the time mentioned) and the time under consideration, typically the present
(e.g: she hasn't spoken to him since last year)


Phrases:

Origin:
late Middle English: contraction of obsolete sithence, or from dialect sin (both from dialect sithen ‘thereupon, afterwards, ever since’)

[sɪns], (Conjunction)

Definitions:
- from a time in the past until the time under consideration, typically the present
(e.g: I've felt better since I've been here)

- for the reason that; because
(e.g: delegates were delighted, since better protection of rhino reserves will help protect other rare species)


Phrases:

Origin:
late Middle English: contraction of obsolete sithence, or from dialect sin (both from dialect sithen ‘thereupon, afterwards, ever since’)

[sɪns], (Adverb)

Definitions:
- between then and now
(e.g: she ran away on Friday and we haven't seen her since)

- ago
(e.g: the settlement had vanished long since)


Phrases:

Origin:
late Middle English: contraction of obsolete sithence, or from dialect sin (both from dialect sithen ‘thereupon, afterwards, ever since’)