Zero option is a term used to refer to a situation where there are no available alternatives or choices. There are a number of synonyms for this term, including 'no alternative', 'nothing else', 'no other option', 'no choice', 'no substitute', and 'no variation'. Other synonyms for zero option include 'dead end', 'catch-22', 'stalemate', 'gridlock', and 'zero sum game'. These terms are often used in a variety of contexts, from politics and economics to everyday life situations. Whether you're stuck between a rock and a hard place or looking for a way out of a difficult situation, understanding synonyms for zero option can help you find the best solution.