This word is acceptable for play in the US dictionary that is being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

ad. In an uninstructive manner.

ad. in an uninformative manner

"The comparison already made between it and its predecessor of May, may not uninstructively be followed by a study of the difference in details between itself and the execution it actually received at the Battle of Trafalgar."

constructively