Crossword clues for the word: NSUB The word NSUB has appeared as an answer to at least 4 crossword clues on different crossword puzzles. Crossword clues for NSUB Showing 1 to 4 of 4 results Clue(s) "Atomic vessel, in headlines" "Ohio-class Trident, briefly" "Red October, for ex." "The Nautilus, for ex."