Word Origin & History
contramid-14c., from L. contra (prep. and adv.) "against," originally "in comparison with," ablative singular feminine of *com-teros, from Old L. com "with, together" + -tr, zero degree of the comp. suffix -ter-.
Contra1981, "anti-Sandinista Nicaraguan," short for Sp. contrarrevolucionario "counter-revolutionary."