fiendish

That was a good one.

We enjoyed that - thanks!

well done

Not very satisfying answers. 'Things you can be under' and 'Types of power' are not very well-defined groups, and it's not clear how even a strong solver could reasonably be expected to solve them. 'Worm' was reasonably good. The 'Hard' group was also a bit suspect. How many English people use the term 'Hard ball'?

very challenging

water, pressure, ground, and fire could also be preceded by "back"

Back pressure? Also types of power seems to actually be well defined considering I recognised it almost immediately - maybe better wording was required but still its something people can get

glow worms are not actually worms!

My only problem is with "under ground" and "under water" vs "underfire and underpressure".

larry those arent words get your life together

white worm is a film title rather than a type of worm, 'back' could precede pressure, water, ground etc...

Types of energy should be acceptable for the power category