1 —1 use as in: However, complications may...Definition
though (or another expression that connects contrasting ideas)
(Based on idea 1 we might not expect idea 2, but this is a way of saying that even though idea 1 exists, we still have idea 2. Synonyms include in spite of that, , nevertheless, nonetheless, on the other hand, in contrastand but.)
Josh's friends, however, went right on eating.
5 — October 16-19 (11% in)
however = a word used to connect contrasting ideas as when using though, in spite of that, in contrast, nevertheless, etc.
There are no more uses of "however" flagged with this meaning in The Princess Diaries.