- not grown to normal size or height: sickly and undergrown cattle.
- having an undergrowth: an undergrown thicket tangled with creeping vines.
Origin of undergrown
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for undergrown
The banks were thickly covered with great trees, undergrown with brush.Heart of the West
The wretched, undergrown youngsters seen in European circuses give no idea of the real size of this noble beast.From the Caves and Jungles of Hindostan
Helena Pretrovna Blavatsky
As I recall his personality, he was an undergrown youth of sallow complexion and uncertain age.Under the Stars and Bars
Walter A. Clark
All at once Huggins caught sight of an undergrown, misshapen boy scowling from the back of the men and women.Mountain
It was kind of a big head, bald big head, looked like Khrushchev, the child—looked like an undergrown Khrushchev.Warren Commission (9 of 26): Hearings Vol. IX (of 15)
The President's Commission on the Assassination of President Kennedy
- not having the expected height
- having undergrowth