jan'-gling (mataiologia, "vain discourse" "babbling"): This word is not found in the American Standard Revised Version; once only in the King James Version (1Ti 1:6). The American Standard Revised Version has "vain talking," instead of "vain jangling," and evidently means proud, self-conceited talking against what God has revealed and against God Himself.
The International Standard Bible Encyclopedia
Jangling
The International Standard Bible Encyclopedia, James Orr (1915). Public domain, from the CrossWire SWORD module.