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:

kailan kai-lan gai lan

kai lan

Cantonese:

芥兰

jyutping:

gaai3 laan4-2

expand for details Detailed etymology

definitions

noun

  1. Brassica oleracea var. alboglabra, a leafy green vegetable commonly eaten in Chinese and South-East Asian cuisine, such as in stir-fries
  2. Kai Lan is a versatile vegetable that has tender leaves and a thick, crunchy stem. It can be eaten blanched, steamed, or stir-fried.

    — 2023 July 18, NParks. GardeningSG, "Kai Lan". https://gardeningsg.nparks.gov.sg/page-index/edible-plants/kai-lan/