uninformative

From un- + informative.

uninformative (comparative more uninformative, superlative most uninformative)

1. lacking useful or interesting information

   Antonym: informative

   That magazine article was uninformative.

   • 1964 September, “New Books: The History of Railways. By Erwin Berghaus. Barrie & Rockcliff. 35s.”, in Modern Railways, page 222:

     Some of the photographs are new and interesting, but many captions are amateurish, uninformative or simply careless.