The younger Germans seem more friendly (6)

I believe the answer is:

kinder

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'more friendly' is the definition.
('kind' can be a synonym of 'friendly')

I cannot understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for kinder that I've seen before include "with less severity" , "More agreeable" , "More considerate and helpful" , "Scout may follow this" , "more pleasant" .)

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