The Oxford Thesaurus An A-Z Dictionary of Synonyms - ideally adv.

1) under or in the best of circumstances, at best, in a perfect world, all things being equal: Ideally, February is the time to holiday in the Caribbean. 2) theoretically, in theory, in principle: Ideally, people ought to have money before they are too old to enjoy it. 3) perfectly: John and Marsha are ideally suited to each other.