overexpansion

/ˌoʊvərɪkˈspænʃən/
noun
  1. The act or process of becoming too large or too widespread, especially in business or physical systems, often leading to problems.
    • The city's overexpansion led to traffic jams and crowded schools.
    • Overexpansion of the lungs can be dangerous for divers.
    • The company's overexpansion into too many markets caused it to run out of money.
Antonyms
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