'insecurity' originates from Latin, specifically the word 'insecuritas,' where 'in-' meant 'not' and 'securitas' meant 'security.'

'insecuritas' transformed into the Old French word 'insecurité,' and eventually became the modern English word 'insecurity.'

Initially, it meant 'lack of security or safety,' but over time it evolved to also include the psychological aspect of 'lack of confidence.'