Administer or administrate? [duplicate]

Question

I'm writing a book, and I'm having trouble wording this:

"I have a forum to __," he said as he walked out the door.

Should the blank be filled in with administer or administrate?

Answer 1

ODO has

administrate verb

less common term for administer (sense 1).
   the person administrating the database system has left the company
   the cost of administrating VAT

mid 16th century: from Latin administrat- 'managed', from the verb administrare (see administer)

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administer verb
[with object]

1 manage and be responsible for the running of (a business, organization, etc.):
   each school was administered separately
   • be responsible for the implementation or use of (law or resources):
      a Health and Safety agency would administer new regulations

late Middle English: via Old French from Latin administrare, from ad- 'to' + ministrare (see ministration)

I would rather use the older, more common form administer than the johnny-come-lately word; but even that has been around for 400 years.