Here is an ingenious post that is not ingenuous in any way.
These two words are easily confused, and often wrongly selected by autocorrect when you aren’t paying attention to the keys you are hitting.
- clever, inventive and/or original
- displaying cleverness or originality; well suited for its intended purpose
- innocent, trusting or unsuspecting; unsophisticated
- honest and straightforward
You can work out which word you need by remembering that a genius is often ingenious.