Pressing old lover over current chap (7)

I believe the answer is:

exigent

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'pressing' is the definition.
(synonyms)

'old lover over current chap' is the wordplay.
'old lover' becomes 'ex' (an ex-lover).
'over current' becomes 'i' (physics symbol. I am not sure about the 'over' bit.).
'chap' becomes 'gent' (both can mean a man).
'ex'+'i'+'gent'='EXIGENT'

Can you help me to learn more?

(Other definitions for exigent that I've seen before include "Demanding immediate attention" , "Pressing; demanding" , "Exacting, requiring much" , "Urgent and taxing" , "Pressing and urgent" .)

I've seen this clue in The Irish Times.

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