The term 'Office Bigwig' is used to describe someone who is in a high-ranking position within an organization. This person is typically the head of the organization or a senior executive. The two crossword solutions for this term are 'BOSS' and 'EXEC, ' both of which are four letters long. A BOSS is someone who is in charge of a group of people, while an EXEC is a senior executive who is responsible for making important decisions. Both of these positions require a great deal of responsibility and authority.