The Spanish word 'fuerte' meaning 'strong' comes from the Latin word 'fortis' (also meaning 'strong' or 'brave'). Specifically, it developed from the accusative form 'fortem'. During the evolution from Latin to Spanish, the 'o' changed to 'ue' (a common sound change in Spanish), and the final '-m' was dropped, resulting in the modern Spanish word 'fuerte'.

Several common Spanish words are related to 'fuerte', including: 'fuerza' (strength, force), 'fortalecer' (to strengthen), 'fortificar' (to fortify), and 'fortaleza' (fortress, strength). All these words share the basic meaning of strength or power from their Latin root.

Many English words are related to 'fuerte' through the same Latin root 'fortis'. Some common examples include 'fort', 'fortress', 'fortify', 'force', 'forte' (as in someone's strong point), and 'comfort' (which originally meant 'to strengthen'). The connection between 'strong' and these English words is clear in words like 'fortress' (a strong building for defense) and 'fortify' (to make something stronger).