'unquestioningly' originates from the English word 'unquestioning,' where 'un-' is a prefix meaning 'not,' and 'questioning' is derived from 'question,' meaning 'to ask or inquire.'

'unquestioning' evolved from the Middle English word 'questioun,' which was derived from the Latin word 'quaestionem,' meaning 'a seeking, inquiry.'

Initially, it meant 'not asking questions,' and this meaning has largely remained the same in modern usage.