themeless adjective 1noun 1forms 1 adjective1 •Without a theme.Instead, Korda squeezes Eisenhower’s extraordinary two-term presidency — not to mention his stints as president of Columbia University and commander of NATO forces — into 140 themeless pages. — 2007 noun1 •A type of crossword (or similar) puzzle in which long answers do not conform to an overarching theme. formsthemelesses
