作り言 (tsukurigoto: fabrication, lie, fiction) to make + words
This sample sentence comes from Jim Breen’s online dictionary:
彼の話は作り言だったとわかった。
Kare no hanashi wa tsukurigoto datta to wakatta.
What he had said proved to be a myth.A breakdown of the other kanji:
彼 (kare: he)
話 (hanashi: talk, story, conversation)