from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Contemplated or arranged in advance; premeditated: malice prepense.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Devised, contrived, or planned beforehand; preconceived, premeditated.
- v. To weigh or consider beforehand; to consider.
- v. To deliberate beforehand.
from the GNU version of the Collaborative International Dictionary of English
- transitive v. To weigh or consider beforehand; to premeditate.
- intransitive v. To deliberate beforehand.
- adj. Devised, contrived, or planned beforehand; preconceived; premeditated; aforethought; -- usually placed after the word it qualifies.
from The Century Dictionary and Cyclopedia
- To consider beforehand; think upon in advance.
- To plan or devise beforehand; contrive previously.
- To reflect or meditate beforehand.
- Considered and planned beforehand; premeditated; purposed; intentional: generally in the phrase malice prepense (formerly also prepensed malice).
From Middle English, past participle of purpensen, to premeditate, from Anglo-Norman purpenser : pur-, before (from Latin pro-; see pro-1) + penser, to think (from Latin pēnsāre; see (s)pen- in Indo-European roots).(American Heritage® Dictionary of the English Language, Fourth Edition)
Back-formation from prepensed, probably from Anglo-Norman prepenser. (Wiktionary)