contribute (v.)

word-forming element meaning "together, with," sometimes merely intensive; it is the form of com- used in Latin before consonants except -b-, -p-, -l-, -m-, or -r-. In native English formations (such as costar), co- tends to be used where Latin would use con-.

also contributer, mid-15c., contributour, "one who pays a tax or assessment," from Anglo-French contributour, from Vulgar Latin *contributorem, agent noun from contribut-, stem of contribuere (see contribute). Meaning "one who gives or grants in common with others" is from 1520s. Related: Contributory (early 15c.).