'cynic' originates from Greek, specifically the word 'kynikos,' where 'kyn-' meant 'dog.'

'kynikos' transformed into the Latin word 'cynicus,' and eventually became the modern English word 'cynic' through Middle English.

Initially, it referred to a member of a school of ancient Greek philosophers, but over time it evolved into its current meaning of a person who distrusts human sincerity.