The spelling of the word "Gigantesqus" is rather uncommon and may be confusing for many. It is pronounced as /dʒaɪˈɡæntɛskjus/ and the reason for the unusual spelling lies in its Latin origin. The word originates from the Latin word 'gigantescus', meaning gigantic or huge, which explains the -esq at the end of the word. The spelling with a Q instead of a C is simply a result of the Latin language's usage of Q before U.