from The American Heritage® Dictionary of the English Language, 4th Edition
- Contrary; opposite; opposing: counterclaim.
- Corresponding; complementary: counterfoil.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- in opposition to
from the GNU version of the Collaborative International Dictionary of English
- A prefix meaning contrary, opposite, in opposition. See counter, adv. & a.
Middle English countre-, from Old French contre-, from Latin contrā; see kom in Indo-European roots.(American Heritage® Dictionary of the English Language, Fourth Edition)