MW Collegiate ( m-w.com ): /fe·brile ˈfe-ˌbrī(-ə)l also ˈfē- /
OAAD: /ˈfɛbraɪl/ , /ˈfibraɪl/
OALD: /ˈfiːbraɪl/, /ˈfebraɪl/
OED: /ˈfiːbrɪl/, /ˈfɛbrɪl/
CALD: UK /ˈfiː.braɪl/ US /ˈfeb.rɪl/
MWLD: /ˈfɛˌbrajəl/ Brit /ˈfiːˌbraɪl/
Collins
7.1 Collins COBUILD Advanced Learner’s Dictionary.: (fiːbraɪl)
7.2 Collins English Dictionary.: (ˈfiːbraɪl)
7.3 Webster’s New World College Dictionary, 4th Edition. : (ˈfibrəl; ˈfɛbrəl)
7.4 Penguin Random House LLC.: (ˈfibrəl, ˈfebrəl, esp Brit ˈfibrail)
LDOCE: /ˈfiːbraɪl $ ˈfebrəl/
The American Heritage® Dictionary of the English Language, Fifth Edition: (fĕbrəl, fēbrəl)