Notice object flying off the handle (8)

I believe the answer is:

seething

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'flying off the handle' is the definition.
I can't judge whether this definition defines the answer.

'notice object' is the wordplay.
'notice' becomes 'see' (notice can mean to spot or see).
'object' becomes 'thing' (an object is a thing or item).
'see'+'thing'='SEETHING'

Can you help me to learn more?

(Other definitions for seething that I've seen before include "coming to the boil?" , "Bubbling, perhaps with rage" , "Extremely angry" , "Boiling" , "very hot" .)

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

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