Mel - strong
Melody Melodrama Melodious
Aden - gland
Adenoid Adenovirus adenoma
Ase - enzyme
Permease Proteinase Luciferase
Epi - on
Epicenter Epidemic Epigram
Struct - build
Construct Destruct Infrastructure
Chlor - green
Chlorophyll Chlorine Chloroplasts
Dys - bad
Dyslexia Dystrophy Dysfunction
Eco - house
Ecology Ecosystem Economist
Im - not
Impossible Impassable Improbable