Without bells and whistles (5)

I think it could be either:

Which length description are you looking for?:

plain

'without bells and whistles' is the definition.
(I've seen this in another clue)

This is all the clue.

(Other definitions for plain that I've seen before include "Clear, candid" , "Unadorned on flat area" , "no oil painting features" , "Unflavoured" , "Flat land; unmarked" .)

I've seen this clue in The Guardian, the USA Today and the Universal.

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.