from The American Heritage® Dictionary of the English Language, 4th Edition
- suffix Performing or tending toward a specified action: demonstrative.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- suffix An adjective suffix signifying relating or belonging to, of the nature of, tending to; as affirmative, active, conclusive, corrective, diminutive.
from the GNU version of the Collaborative International Dictionary of English
- suffix An adjective suffix signifying relating or belonging to, of the nature of, tending to.
Middle English, from Old French, from Latin -īvus, adj. suff.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Anglo-Norman -if (feminine -ive), from Latin -ivus. Until the fourteenth century all Middle English loanwords from Anglo-Norman ended in -if (compare actif, natif, sensitif, pensif etc.), and under the influence of literary Neolatin both languages introduced the form -ive. Those forms that have not been replaced were subsequently changed to end in -y (compare hasty, from hastif, jolly, from jolif etc.). (Wiktionary)