Dismiss over job's romance (9)

I believe the answer is:

fireworks

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'dismiss over job's romance' is the definition.
I can't tell whether this definition defines the answer.

'dismiss over job's' is the wordplay.
'dismiss' becomes 'fire' (synonyms).
'over' says to put letters next to each other.
'job's' becomes 'works' ('work' can be a synonym of 'job').
'fire'+'works'='FIREWORKS'

Can you help me to learn more?

(Other definitions for fireworks that I've seen before include "Display on November 5th etc" , "Pyrotechnics" , "rockets, perhaps" .)

I've seen this clue in the Sydney Morning Herald.

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