-걸랑

Short for older 거들랑 (-geodeullang), from 거든 (-geodeun) +‎ 을랑 (-eullang).

걸랑 • (-geollang) (colloquial, regional)

1. if

   김치 만들어고 싶걸랑 배추를 사야지.

   Gimchi mandeureogo sip-geollang baechu-reul sayaji.

   If you want to make kimchi, you have to buy cabbage.

2. In the intimate style, introduces information new to the addressee.

• Although given without comment in the prescriptive dictionary of the language, it is nowadays typically perceived as a nonstandard and somewhat quaint term from the traditional "Seoul dialect" that was used by people of the capital region prior to South Korean industrialization, rather than with the contemporary standard language.

• 거들랑 (-geodeullang)