Synoniemen.net

verharden (ww):
härten(en) to become hard.
(en) to make hard(er).
(en) to become or make less sensitive., abhärten(en) to cause to become accustomed to something unpleasant by prolonged exposure., an(en) to cause to become accustomed to something unpleasant by prolonged exposure., gewöhnen(en) to cause to become accustomed to something unpleasant by prolonged exposure.

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