(n.) A condition of overgrowth or excessive development of an organ or part; -- the opposite of atrophy.

abandon blossom boundlessness brew burgeon develop egregiousness enormousness exaggeration excess excessiveness exorbitance exorbitancy extravagance extravagancy extreme extremes extremism extremity fabulousness flourish gather germinate giantism gigantism gluttony grow grow up hyperbole immoderacy immoderateness immoderation incontinence increase inordinacy inordinance inordinateness intemperance intemperateness mature monstrousness mushroom nimiety outgrow outrageousness outsize overdevelop overdevelopment overgreatness overgrow overgrowth overindulgence overlargeness overmuch overmuchness overtop overweight procreate pullulate radicalism reproduce shoot up spring up sprout sprout up thrive too much too-muchness tower unconscionableness undueness unreasonableness unrestrainedness upshoot upspear upspring upsprout vegetate wax