Very quickly and in great quantities. Used in reference to things or people appearing or multiplying. As the economy recovered and jobs became more plentiful, high-rise apartments started popping up like mushrooms to accommodate the huge influx of worker pouring into the city. Self-professed writers started appearing like mushrooms with the advent of the blog.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
like mushroomssuddenly and in great numbers.
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