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A challenge or hindrance that prevents something from being accomplished. Stay away from your old friends—their drug use will be a stumbling block in your recovery from alcoholism. We're trying to sell the house, but its undesirable location has proved to be a real stumbling block.
Fig. something that prevents or obstructs progress. We'd like to buy that house, but the high price is a stumbling block. Jim's age is a stumbling block to getting another job. He's over sixty.
A hindrance or obstacle, as in His lack of a degree is a real stumbling block to his advancement. This term originally meant "a tree stump over which one trips." Its figurative use dates from the early 1500s.
a stumbling block
COMMON If you describe something as a stumbling block, you mean it is a problem which stops you from achieving something. It's her attitude that's the biggest stumbling block. Cost is a major stumbling block in the hunt for a vaccine. Note: This expression comes from the Bible: `...that no man put a stumbling block or an occasion to fall in his brother's way.' (Romans 14:13)