overgrown (adj.)
- abandoned
- abundant
- astronomical
- awesome
- blooming
- boundless
- braky
- brambly
- budding
- bulky
- colossal
- cosmic
- covered
- crescent
- dense
- developed
- egregious
- enormous
- exaggerated
- excessive
- exorbitant
- extensive
- extravagant
- extreme
- exuberant
- fabulous
- fancy
- florescent
- flourishing
- flowering
- full-fledged
- full-grown
- galactic
- gigantic
- gluttonous
- gross
- growing
- grown
- heavy
- high
- huge
- hyperbolic
- hypertrophied
- immeasurable
- immense
- immoderate
- impenetrable
- incontinent
- infinite
- inordinate
- intemperate
- jungly
- king-size
- large
- lush
- luxuriant
- mammoth
- massive
- mature
- monstrous
- monumental
- mountainous
- outrageous
- outsize
- outsized
- overfed
- overlarge
- overmuch
- oversized
- overweening
- overweight
- prodigious
- rank
- riotous
- sizable
- spacious
- steep
- stiff
- stupendous
- thick
- thriving
- titanic
- tremendous
- unbridled
- unconscionable
- undue
- unreasonable
- unrestrained
- vast
- voluminous
- weedy
- weighty