A thing no longer in use – Obsolete
An exact copy – Facsimile
A post held without receiving salary – Honorary
A person’s peculiar habit – Idiosyncrasy
A person who remains unmoved and unaffected by other people’s opinions and suggestions - Impervious
A government by the rich – Plutocracy
A citizen of the world – Cosmopolite
A man devoid of kind feeling and sympathy – Callous