In reply to:

I have loved the phrase "without let or hindrance" ever since I first saw it

Me 2 MQ. In fact, that's probably what infatuated me with contranymia in the first place.

My latest acquisition is 'wood', as in 'He couldn't see the wood for the trees'.

In passing I note that this particular (wood-)saw is all too apt on this Board, but it's not its appositeness that interests me, but its oppositeness.

Does it mean 'so focussed was he on the tree, he failed to notice its context, the thick thicket', or is it rather that 'so focussed was he on the tree, he failed to notice its essence, the organic matter within'? Or both?

In other words, is 'wood' what a wood's made of, or is a 'wood' what's made of wood?