Grapheme J: WearYourDictionary's Inventory: As of August 2020: [Moribund Institute]
Channel: English [Moribund Institute]
Date: 2020-08-28

Jalopy - (US, dated) An old, dilapidated or unpretentious automobile.
Jeofail - (law) An oversight in pleading, or the acknowledgment of a mistake or oversight.
Japanophobia - A fear or hate of Japan and Japanese people or culture
Juche - North Korean self-reliance state ideology

https://en.wiktionary.org/wiki/jalopy
https://en.wiktionary.org/wiki/Japanophobia
https://en.wiktionary.org/wiki/juche