Definition
This idiom suggests that the absence of news regarding someone or something implies that everything is fine, and there is no need to worry. If something negative had occurred, one would likely have been informed.
We haven't heard from him since he went to work overseas, but I guess no news is good news.
There hasn't been any news about my application, but I suppose no news is good news; they must still be processing it.
They haven’t replied to our inquiry yet, but I suppose no news is good news, so everything must be okay.