There is nothing unthematic in this composition.    From Wordnet, Princeton University. 

I think she's wearing a generic fanciful hipster costume, typically unthematic, without coherent motifs, pure caprice and nothing more, yet oddly enough, highly selfconscious.    From Wordnik.com.  [Raising the Stakes: The Contest Continues] Reference

The building phase revolves heavily around the fact that there's a limited number of each type of building to be built, which is entirely unthematic and a typical method used by Euro designers to force the players into difficult choices.    From Wordnik.com.  [Boardgame News] Reference