Preached about one and all (4)

I believe the answer is:

each

'one and all' is the definition.
(thesaurus)

'preached about' is the wordplay.
'about' indicates a hidden word.
'EACH' can be found hidden inside 'preached'.

(Other definitions for each that I've seen before include "Everyone separately" , "Per capita, apiece" , "Every one separately" , "This way for a place" , "Every one of a number" .)

I've seen this clue in The Mirror.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.