Crossword Genius

Dreadful pranks reportedly stopped by cold woman in charge (9)

Ross

I believe the answer is:

directrix

I'm a little stuck... Click here to teach me more about this clue!

'woman in charge' is the definition.
The definition suggests a singular noun which matches the answer.

'dreadful pranks reportedly stopped by cold' is the wordplay.
'dreadful' becomes 'dire' (synonyms).
'pranks reportedly' becomes 'trix' (I can't explain this - if you can you should believe this answer much more).
'stopped by' means one lot of letters goes inside another (stopping can mean blocking a gap).
'cold' becomes 'C' (eg on taps).
'dire'+'trix'='diretrix'
'diretrix' going around 'c' is 'DIRECTRIX'.

Can you help me to learn more?

I've seen this clue in The Times.
Want a hint initially instead of a full solution? Install my app