tricky

That's the tricky thing.

It's solving a crossword puzzle, assembling some furniture, navigating a tricky family situation.

But for organisms that don’t stay still, the counting is a little trickier.

And that puts scientists, political leaders, and our whole society in the pretty tricky position of having to react to something that hasn’t actually happened yet.

If we think of it in terms of food, someone who was left to be very hungry may be especially tricky once a meal is offered to them.