The term 'upper class' refers to a social class of people who are generally wealthy and have a high social status. This term can be summarized by two crossword solutions: 'POSH' (4 letters) and 'PRIVILEGED' (10 letters). POSH is an informal term used to describe someone or something that is fashionable, luxurious, or expensive. PRIVILEGED is a term used to describe someone who has special rights, advantages, or immunities not available to others. Both terms refer to the upper class and their access to wealth and power.