"Liz" is a nickname or shortened form of the name Elizabeth. The clue "Brief British P.M. ___ Truss" suggests that the word is related to a British Prime Minister and possibly someone named Truss, but without additional context, it is uncertain what specific word it refers to.
Note: The provided meaning of the answer is for the latest New York Times crossword puzzle clue: Alternative to Betsy. Explanations are generated by AI and may be inaccurate.