ad·min·is·ter 
(ăd-mĭnĭ-stər)
(ăd-mĭnĭ-stər)v. ad·min·is·tered, ad·min·is·ter·ing, ad·min·is·ters
v.tr.
1. To have charge of; manage.
2.
a. To give or apply in a formal way: administer the last rites.
b. To apply as a remedy: administer a sedative.
c. To direct the taking of (an oath).
3. To mete out; dispense: administer justice.
4. To manage (a trust or estate) under a will or official appointment.
5. To impose, offer, or tender (an oath, for example).
v.intr.
1. To manage as an administrator.
2. 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).]
ad·minis·tra·ble (-ĭ-strə-bəl) adj.
ad·minis·trant adj. & n.