When I first submitted Hemispheres for publishing a few years ago, it was rejected by Philip K. Dick's publisher for immediacy issues. I told the editor I'd work on it, then immediately queried, "What the hell is immediacy?" Immediacy issues are created when authors have the assumption that readers read books. Readers actually read themselves reading the book (this is part of second-order cybernetics / phenomenology. See the book I am a Strange Loop). When distancing language is used, then readers end up reading themselves reading a book about a character who is also reading themselves. This creates a fourth degree of separation which decreases the impact of your writing.
For instance, "He heard the wind and looked over to see the ships on the shore, feeling sad." Is much better written without distancing language to immerse the reader as, "The wind scraped across his ears. The triangular sails rose over the horizon, each wave bringing everyone home to joyous arms, except her."
If the philosophy's a bit abstract, the key takeaway is to avoid using the following words in your writing. It is okay to use them in dialogue, and when describing other characters' actions, but using them while narrating the main character ruins immersion. The biggest offenders are looked, saw, watched, listened, and heard. Removing these words will also force you to show not tell.
Words to seldom use:
knew (especially in third-person limited)
perhaps (unless it maintains POV)
probably (unless it maintains POV)
sat down (sat)
Words to use only occasionally:
adverbs (ly words)
as (editors hate the overuse of this word. It usually throws the chronology of the sentence off rather than indicating two things done simultaneously)
held up (sometimes you can use raised)
was going (sometimes you can use went)
was rising (sometimes you can use rose)
The last thing I do when writing is to scan for these words. Hope this helps!