| pros and cons | |
| —pl n | |
| the various arguments in favour of and against a motion, course of action, etc | |
| [C16: from Latin prō for + con, from contrā against] | |
pros and cons
Arguments or considerations for and against something, as in We'd best weigh all the pros and cons before we decide to add a new wing to the library. This idiom is taken from the Latin pro for "for" and con for "against." [Late 1500s]