'nonsensical' originates from the English word 'nonsense,' combined with the suffix '-ical,' where 'non-' meant 'not' and 'sense' referred to 'meaning or logic.'

'nonsense' transformed into the adjective form 'nonsensical' by adding the suffix '-ical,' which is used to form adjectives.

Initially, it meant 'lacking sense or meaning,' and this meaning has largely remained the same in modern usage.