overexpand

verb

over·​ex·​pand ˌō-vər-ik-ˈspand 

overexpanded; overexpanding

transitive + intransitive

: to expand too much or too quickly

… one lung overexpanded and collapsed …

—Jack Fincher

Some tech companies overexpanded in the late '90s, so they're reluctant to make new capital investments.

—Michael Sivy

He bought a lighting manufacturer, … overexpanded it, and lost millions.

—Patricia Sellers

Word History

First Known Use

1851, in the meaning defined above