unfazed

adjective2

1. •
   Not frightened or hesitant; undaunted; not put off; unimpressed.

   • After stumbling and landing on her face, the toddler picked herself up and continued unfazed.
2. •
   (no longer used) Undamaged.

   • The tall man throughout was "unphased"—the dewy and least compact one surrendered! — 1855