pre·pense (prĭ-pěns') adj. Contemplated or arranged in advance; premeditated: malice prepense.
[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).] pre·pense'ly adv.