coupledom noun2 •The world or sphere of romantic couples.The ads were already showing as he clambered along and in their patchy glare he loomed and ducked and apologized, and was a clumsy intruder in a world of snuggling coupledom. — 2004 •The state of being a romantic couple.More coffee is consumed, a movie date is arranged, coupledom achieved and, naturally, nuptials performed. — 2011 formscoupledoms