What's the proper adjective to describe something that should not be ignored? My intuition is that it should be "not ignorable", but my chrome spell checker doesn't think that is a correct word, and when I looked it up, I found it is only "Austral, informal". Hence the question. Thanks.
Note,
- I want to say "not ignorable", instead of something like "significant" or alike.
- I also tried "neglectable", but my chrome spell checker doesn't think it is a correct word either. And besides, I think the meaning is slightly off as well.
Supplement:
For the context of the question -- this is meant for a business environment, when delivering some minor negative news. I want to be polite and respectful of my audience, but make them aware of something - to call their attention to it.