Commonly found variants; note these may range from acceptable alternatives to non-standard forms or incorrect spellings*.
* Singlish is a largely spoken creole, and as such descriptivism (recording forms that reflect actual pronunciation in spoken language, or as appearing in the linguistic corpus) is more pertinent than strict prescriptivism. Nevertheless, the use of more standard forms (or for words originating in languages with Latin script, such as Malay, accurate to the original spelling) is recommended and encouraged.

also can:

syok sendiri

shiok sendiri

Malay:

syok sendiri

expand for details Detailed etymology

definitions

noun

  1. self-absorbed; self-important; conceited; narcissistic; full of oneself
  2. It must have been strange saying all these "funny" things without getting immediate feedback, no laughter, no approving faces. "Easy. Shiok sendiri, I just entertained myself."

    — 1994 September 14 (quoting Gurmit Singh). The New Paper, "GURMIT'S COMEDY ALBUM". p.31