Where does “ความงก” come from?

ความงก (Thai) comes from Thai ความ, from Proto-Tai ɣwaːmᴬ — matter.

Ancestry of “ความงก”, step by step

ความงก traces back through two separate lines of ancestry.

via Thai ความ

StepLanguageWordMeaning
1Thaiความaffair; matter; content; essence; subject;...
2Proto-Taiɣwaːmᴬmatter

via Thai งก

StepLanguageWordMeaning
1Thaiงกstingy; miserly; penurious; niggardly
Every word from Proto-Tai ɣwaːmᴬEvery word from Thai ความ