* Origin: The word comes from the Old French word "sergent," which meant "servant."
* Evolution: Over time, the spelling shifted as the word traveled into Middle English. "Sergent" became "sergeant," with the "-ant" ending reflecting a shift in the word's meaning to imply someone who serves as a soldier.
* Standardisation: The spelling "Sergeant" became standardized in English in the 16th century, likely due to the influence of the French military.
The "-ant" ending isn't arbitrary. It indicates the word's original meaning of "servant," and it's also common in other military ranks like "lieutenant," "adjutant," and "warrant officer."
While some might see the spelling as odd compared to similar words like "servant," it reflects the historical development of the English language and the influence of French words on the military vocabulary.