ad·min·is·ter (ăd-mĭn'ĭ-stər)

v., -tered, -ter·ing, -ters.

v.tr.
To have charge of; manage.

To give or apply in a formal way: administer the last rites.
To apply as a remedy: administer a sedative.
To direct the taking of (an oath).
To mete out; dispense: administer justice.
To manage or dispose of (a trust or estate) under a will or official appointment.
To impose, offer, or tender (an oath, for example).
v.intr.
To manage as an administrator.
To minister: administering to their every whim.
[Middle English administren, from Old French administrer, from Latin administrāre : ad, ad- + ministrāre, to manage (from minister, ministr-, servant; see minister).]

administrable ad·min'is·tra·ble (-ĭ-strə-bəl) adj.
administrant ad·min'is·trant adj. & n.