Crossword clues for the word: LONELIEST The word LONELIEST has appeared as an answer to at least 7 crossword clues on different crossword puzzles. Crossword clues for LONELIEST Showing 1 to 7 of 7 results Clue(s) '___ Star' (Seal song) 'One is the ___ number that you'll ever do' (Three Dog Night lyric) Adjective for Crusoe. Extremely solitary if most enjoyable 16A for Victor Least attended Least frequented Librettist loses heart to complete stories, having minimal support from friends