in principle
in theory *
in essence *

In theory we now had a clear shot at our site.

In theory, they should walk away with their parents after a couple of weeks.

In theory, these will show up within about 24 hours.

So in theory they won't be able to find me.

Doesn't mean to say he was wrong in theory though.

And the law is on our side, at least in theory.

In theory, he said, Congress could deal with both issues at the same time.

In theory, how can you not agree with the company?

In theory, the French have no problem with the idea of a woman as president.

In theory, this had little or nothing to do with me.