premeditate (v.)

1580s, "to ponder, think abstractly, engage in mental contemplation" (intransitive), probably a back-formation from meditation, or else from Latin meditatus, past participle of meditari "to meditate, think over, reflect, consider," frequentative form of PIE root *med- "take appropriate measures." From 1590s as "to plan in the mind," also "to employ the mind in thought or contemplation," especially in a religious way. Related: Meditated; meditating.

"previous deliberation, prior consideration, forethought," early 15c., premeditacioun, from Old French premeditacion and directly from Latin praemeditationem (nominative praemeditatio) "consideration beforehand," noun of action from past-participle stem of praemeditari "to consider beforehand," from prae "before" (see pre-) + meditari "to consider," from a frequentative form of PIE root *med- "take appropriate measures."