I am not sure about the suggestion, even though it's a very good one, @Sunny
Because I had to think quite some time, in order to come up with one, even though I love words and challenges.
It might be too tedious or difficult for some to enjoy the fun of a game.
Unless perhaps we make just the first word of the pair alphabetical, and not the opposite, that pairs with it.?
Anyone, or you, have additional input on this?