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WordNet-Online 
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| Definitions from the Web
 OpstacleNoun: An obstacle that inhibits progress or success. Example: The lack of funding became a major opstacle for the construction project. Related Products: Obstacle-related Products on Amazon 
 Local Usage:
 Noun: In certain local communities, especially in extreme sports enthusiasts, "opstacle" is sometimes used as a slang term for a particularly challenging obstacle found in outdoor adventure or sporting events. Example: The mountain biker successfully conquered each opstacle on the intense downhill trail. Related Products: Outdoor Adventure Equipment on Amazon 
 Popular Usage:Noun: In general parlance, "opstacle" refers to any impediment or barrier that hinders progress or achievement. Example: The lack of technological advancements can be seen as an opstacle to the growth of certain industries. Related Products: Productivity Tools on Amazon | ||||
| opsin opsonin opsonins opsonisation opsonization opsonize opssesed opssum opstacle opt-ed opt-in opt-out opt opt in opt out opt to optaion 
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