The term "goflat" refers to a state where something, usually a carbonated drink, loses its fizz or becomes flat. It means that the bubbles or effervescence in the drink have dissipated, resulting in a lack of carbonation and a decrease in its characteristic fizzy texture and taste.
Note: The provided meaning of the answer is for the latest New York Times crossword puzzle clue: Lose fizz. Explanations are generated by AI and may be inaccurate.