Go headlong' is an idiom meaning to do something without thinking or planning. The crossword solutions for this term are CAREEN (6 letters), RUSH (4 letters), and CAREER (6 letters). CAREEN means to move in a swaying or tilting manner, RUSH means to move quickly, and CAREER means to move rapidly in a particular direction. Therefore, the crossword solutions for 'go headlong' suggest that it involves moving quickly and without planning.