exerceo

cavo – cultivate, dig, excavate, hollow out, pierce
colo – cherish, cultivate
colui – cherish, cultivate
cultum – cherish, cultivate
excolo – adorn, cultivate, polish, refine, serve, to honor, to tend
inhibeo – back water, check, employ, practice, restrian, to hold in, use
meditatio – consideration, getting ready, meditation, pondering, practice, preparation
meditatus – consider, ponder, practice, to reflect upon
meditor – consider, ponder, practice, to reflect upon

exercitatio – adminstration, busy oneself in, prosecute, work at
exercito – to practise diligently
exercitus – army
exertus – approved, experienced, project, tested, thrust forward, tried
exeo – go forth, to withdraw
expio – to purify
expleo – complete, discharge, fill up, finish, fulfil, to fill, to fulfill, to make losses good
exuo – deprive, put away, store, strip, strip off, to divest, to lay aside
exacuo – to sharpen
exaestuo – foam, to give forth

ex·er·ce·o[1]