n.[U]

1. 堅固；堅實
   They loved the house, but were not sure of the firmness of its foundation.

   他們很喜歡這個房子，可是對房子地基的堅固性沒有把握。

2. 堅定；堅決
   My boss seems to be a woman of considerable firmness.

   我的老板看上去是個相當堅定的女人。