The spelling of the word "Guilbault" can be confusing at first glance. It is pronounced /ɡilboʊ/ in the International Phonetic Alphabet. The first syllable, "gil," is pronounced with a hard "g" sound like "give." The "b" in the second syllable is pronounced, and the "ault" part sounds like "o" followed by "lt." Remembering that the "a" in the middle is silent and that the "t" is not pronounced can help with proper spelling when writing or typing this word.
The name Guilbault is of French origin. It is derived from the combination of two elements: guil and bault.
Guil is an abbreviated form of the French given name Guillaume, which is the equivalent of the English name William. It ultimately comes from the Germanic elements wil (will) and helm (helmet), meaning resolute protector.
Bault is a surname component that has roots in the Old French term baut, which means bold, brave. It is related to the word bald, which in medieval times meant brave, strong.
When combined, Guilbault can be understood as a compound name meaning resolute protector or brave protector, originating from the combination of Guillaume and bault.