 Standard Singapore English (SSE) and Colloquial Singapore English (CSE) or Singlish as many locals call it.The relationship between SSE and Singlish is viewed as a diglossia, in which SSE is restricted to be used in situations of formality where Singlish/CSE is used in most other circumstances.Some of the most popular Singlish terms have been added to the Oxford English Dictionary (OED) since 2000, including "wah", "sabo", "lepak", "shiok" and "hawker centre".