불가사의가 · 불가사의를
mystery, wonder, something inexplicable
Example
피라미드는 세계 7대 불가사의 중 하나입니다.
The pyramids are one of the Seven Wonders of the World.
Word parts
불 not+가 can+사 think+의 discuss
Literally 'cannot be thought of or discussed'; originally a Buddhist term.
Good to know
Also an adjective: 불가사의하다 'mysterious, inexplicable'.
Related words