The spelling of the word "thesigerous" may seem confusing at first, but it can be broken down phonetically as /θiːsədʒərəs/. The first syllable of the word is pronounced with the "th" sound as in "thin." The second syllable features a long "e" sound and is followed by the "s" sound. The third syllable has a "juh" sound and is followed by the "r" sound. The final two syllables both feature an "uh" sound. Despite its complex spelling, "thesigerous" simply means "full of theses."