Longman Dictionary of Contemporary English homepage

overgrown

adjective
     
Related topics: Gardening, Plants
o‧ver‧grown
1HBPDLG covered with plants that have grown in an uncontrolled way
overgrown with
The garden will be overgrown with weeds by the time we get back.
2 when grass or plants are overgrown, they have grown in an uncontrolled way:
a lawn with overgrown grass
3

overgrown schoolboy/child

an adult who behaves like a child - used to show disapproval:
Stop acting like an overgrown schoolboy.

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