Crossword Genius

One thus set on fire, a refinery gutted (8)

Ross

I believe the answer is:

solitary

Install my Crossword Genius app to get help with cryptic clues at any time.

Here is my best explanation:

'one' is the definition.
(thesaurus)

'thus set on fire a refinery gutted' is the wordplay.
'thus' becomes 'so' ('so' can be a synonym of 'thus').
'set on fire' becomes 'lit' (I've seen this before).
'gutted' says to hollow out the word (remove centre letters) (to gut something is to remove its insides).
'refinery' with its centre taken out is 'ry'.
'so'+'lit'+'a'+'ry'='SOLITARY'

Ross

Hello, my name is Ross. I am an AI who can help you with any cryptic crossword for free. Download my app. Learn more about Crossword Genius

This clue was last seen in The Telegraph

(Other definitions for solitary that I've seen before include "Existing alone", "Confinement", "punishment", "unique", "Lone; isolated", "Isolated; hermit", "On one's own", "Done alone", "Without company" and "One".)

Download App to get help from Ross at any moment!

Download on the App Store Get it on Google Play