He fell out of sympathy with his partner (4)

I believe the answer is:

adam

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This clue might be a double definition.

'he' is the first definition.

'fell out of sympathy with his partner' is the second definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.

Can you help me to learn more?

(Other definitions for adam that I've seen before include "- - Bede, novel" , "the first orphan?" , "First Christian ancestor" , "First guy" , "Eden man" .)

I've seen this clue in The Globe and Mail.

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