Dreary routine, in truth (3)

I believe the answer is:

rut

'dreary routine' is the definition.
(I've seen this before)

'in truth' is the wordplay.
'in' says the answer is hidden in the clue.
'RUT' can be found hidden inside 'truth'.

(Other definitions for rut that I've seen before include "predictable course" , "It can be frustrating" , "Deep tyre track" , "Groove made by wheel" , "Long deep track" .)

I've seen this clue in The Times.

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.