'assurant' originates from Old French, specifically the word 'assurant' (present participle of 'asseurer'), ultimately related to Latin roots meaning 'secure' (via 'securus' with an ad- prefix).

'assurant' changed from Old French 'assurant' (present participle of 'asseurer') and entered English usage with meanings tied to 'assure'/'assurance'; its form and use have been rare or literary in modern English.

Initially, it meant 'making secure or giving assurance,' and over time it has retained the core sense of 'confident' or 'assuring,' though its use in modern English is rare or literary.