to begin to mushroom
- phrasal verb
- As interest in the event grew, attendance began to mushroom beyond our expectations.
Examples
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After the new restaurant opened, the number of visitors to the area began to mushroom dramatically.
-
This landscape soon changed, as the neighborhood began to mushroom around the Press.
Blog text (3) -
The small business began to mushroom after they launched their online store.
Synonyms
Start to exist or slowly develop, as with an idea
To begin to grow new shoots or leaves
To rise very quickly in amount or value
To appear quickly in a place, often as new shops or cafes
To grow or increase very quickly
Increase quickly in number or make something increase quickly
To become much larger or more common very quickly
Starting to grow quickly, like a new business or neighbourhood
To start growing, usually of plants or seeds
Growing very quickly in size or cost
Antonyms
How Quickly
Surface Forms
Morphology
The phrase is fully compositional: 'begin' (to start) + 'to' (infinitive marker) + 'mushroom' (to grow/spread rapidly) straightforwardly yields 'start to grow or expand very quickly.' This start+verb pattern is cross-linguistically common, so an average B1 learner who knows the constituent words would be able to infer the MWE's meaning.
Etymology
Begin to mushroom may come from the way mushrooms suddenly appear and grow after rain, seeming to pop up everywhere. That's why the phrase means 'to start growing or spreading very quickly'.