blatantly, blindingly, extremely, glaringly, patently, transparently, very
completely, perfectly, quite
It was quite obvious that she hadn't studied for the exam.
increasingly
by no means, far from, less than, not at all, not entirely
The reason why she left her job was by no means obvious to anyone at the company.
a bit, fairly, pretty, rather
The answer was pretty obvious once she pointed out the mistake in my calculation.
apparently, seemingly
immediately
When she walked in late, it was immediately obvious that something had upset her.
intuitively
That answer seemed intuitively obvious to me, but the teacher said it was wrong.
depressingly, distressingly, painfully
It's depressingly obvious that many people skip breakfast even though it's the most important meal.