The English meaning of 'fide et fortitudine' is By faith and courage. In the word-by-word translation, the noun 'fide' means 'faith'. The conjunction 'et' means 'and'. The noun 'fortitudine' means 'courage'.
This seems incorrect as this latin saying has been used as a clan motto by the Farquharson Clan of Scotland since the 5th century the translation given is 'Fide Et Fortitudine' or "By Fidelity and Fortitude