convict (n.) Look up convict at Dictionary.com
late 15c., from convict (v.). Slang shortening con is from 1893.
convict (v.) Look up convict at Dictionary.com
mid-14c., from Latin convictus, past participle of convincere "to 'overcome' in argument" (see convince). Replaced Old English verb oferstælan. Related: Convicted; convicting.