fascinatingly

US /ˈfæs.ən.eɪ.t̬ɪŋ.li/
UK /ˈfæs.ən.eɪ.t̬ɪŋ.li/
1.

de manière fascinante

in an extremely interesting way:

:
•
Her grandmother talked fascinatingly about her life during the war.