Enormous leakage in fuel (8)

I believe the answer is:

colossal

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'enormous' is the definition.
(synonyms)

'leakage in fuel' is the wordplay.
'leakage' becomes 'loss' (I am not sure about this - if you are sure you should believe this answer much more).
'in' is an insertion indicator.
'fuel' becomes 'coal' (coal is a kind of fuel).
'loss' placed into 'coal' is 'COLOSSAL'.

Can you help me to learn more?

(Other definitions for colossal that I've seen before include "Very big" , "Giant" , "Gargantuan" , "Great" , "Huge, vast" .)

I've seen this clue in The Globe and Mail.

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