The phrase "unbridled growth" means uncontrollable or unrestricted expansion or development without any limitations or restraints. It signifies unfettered or excessive growth that is unrestricted and not contained. Full definition
How much longer can the Earth be reasonably and sensibly expected to sustain the colossal, unbridled growth of human consumption, production and propagation activities now overspreading the surface of our planetary home? (dotearth.blogs.nytimes.com)
For some reason, Malkin, a champion of free markets and foe of regulation, couldn't find the space in her piece to question unbridled growth in a danger zone. (dotearth.blogs.nytimes.com)
One of the culprits is unbridled growth coupled with no destruction governance. (xactdatadiscovery.com)