Where does “ความฉิบหาย” come from?

ความฉิบหาย (Thai) comes from Thai ฉิบหาย, from Thai หาย, from Proto-Tai ʰrwɤːjᴬ — to disappear.

Ancestry of “ความฉิบหาย”, step by step

ความฉิบหาย traces back through two separate lines of ancestry.

via Thai ฉิบหาย

StepLanguageWordMeaning
1Thaiฉิบหายto go to wrack and ruin; to undergo complete...
2Thaiหายto disappear; to be lost; to be missing; to be...
3Proto-Taiʰrwɤːjᴬto disappear

via Thai ความ

StepLanguageWordMeaning
1Thaiความaffair; matter; content; essence; subject;...
2Proto-Taiɣwaːmᴬmatter
Every word from Proto-Tai ʰrwɤːjᴬ →Every word from Thai หาย →Every word from Thai ฉิบหาย →