Crossword Genius

Unknown fate when swallowing drug with a fanatic (6)

Ross

I believe the answer is:

zealot

Here is my best explanation:

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

'unknown fate when swallowing drug with a' is the wordplay.
'unknown' becomes 'z' (algebra).
'fate' becomes 'lot' (synonyms).
'when swallowing' is an insertion indicator.
'drug' becomes 'e' (e is another name for ecstasy).
'with' indicates putting letters inside.
'z'+'lot'='zlot'
'zlot' placed around 'e' is 'zelot'.
'zelot' going around 'a' is 'ZEALOT'.

This clue was last seen in The Times