• katest thing,
• patest thing,
• oatest thing,
• lztest thing,
• lstest thing,
• lwtest thing,
• lqtest thing,
• larest thing,
• lafest thing,
• lagest thing,
• layest thing,
• la6est thing,
• la5est thing,
• latwst thing,
• latsst thing,
• latdst thing,
• latrst thing,
• lat4st thing,
• lat3st thing,
• lateat thing

The adjective form of "latest thing" is "latest".

The plural form of "latest thing" is "latest things".

The singular form of the word "latest thing" is "latest thing". It remains the same in both singular and plural forms.