From Latin: pro Sample words for the root pro: produce, product, problem, process, protect, productive, prominent, promise, propeller, protein, procedure, procession, promotional, proceed, prodigy, progeny, proliferate, protrude, provoke, propensity, proprietor, propriety, prospector, prosper, procrastination, profligate, profound, proposition, prosperous, provincial, profess, proficient, progression. Each word has meanings and examples. Click their buttons to get sentences selected from classic works and modern media.