noun
invented story; fabrication
Refers to a made-up story or lie, often with a nuance of something deliberately concocted to deceive or entertain. Not a common everyday word; more likely found in literary or dramatic contexts.
彼の話は全部こしらえごとだった。
His story was a complete fabrication.
それはただのこしらえごとに過ぎない。
That's nothing more than a made-up story.