We would often say there is "an opportunity" somewhere, but I can't find any evidence of a word to describe a dearth of opportunity. It's derived from opportune, which has inopportune as a negation, but the shape of an inopportunity doesn't seem correct and is very clunky to say. Is there a single word meaning "no opportunity"?
Learn English – single-word antonym for “Opportunity”
antonyms
Best Answer
In business management context, the antonym of 'opportunity' is 'threat'. An 'opportunity' by definition is a circumstance where one has possibility of gaining some benefit, and a 'threat' is exactly the opposite - a circumstance where one has possibility of some loss.
However, in day-to-day context, we could take 'adversity' as antonym for 'opportunity'. 'Adversity' here meaning an unfavorable condition/circumstance, whereas 'opportunity' meaning favorable condition/circumstance.