COMPOUND WORDS 
arduous | {adj} | (hard to climb) | arduous | {adj} | (needing or using up much energy) | assiduous | {adj} | (hard-working, diligent) | comedy duo | {n} | (comic pairing) SEE: double act :: | deciduous | {adj} | (of or pertaining to trees which lose their leaves in winter or the dry season) | deciduous holly | {n} | (American winterberry) SEE: American winterberry :: | deciduous tooth | {n} | (baby tooth) SEE: milk tooth :: | deciduous winterberry | {n} | (American winterberry) SEE: American winterberry :: | duo | {n} | (twosome, especially musicians) | duodecillion | {num} | (10^39) | duodecillion | {num} | (10^72) | duodenum | {n} | (first part of the small intestine) | duopoly | {n} | (market situation in which two companies exclusively provide a particular product or service) 
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