Crossword clues for the word: USK The word USK has appeared as an answer to at least 7 crossword clues on different crossword puzzles. Crossword clues for USK Showing 1 to 7 of 7 results Clue(s) River in SE Wales upon which Newport stands River in southeast Wales upon which Newport stands River in Wales and England River mostly in the United States? Severn tributary Slag dross Water needed for us to finish work