The term 'high end' is used to describe luxury items or services that are of the highest quality and cost. The four crossword solutions for this term are NESS (4 letters), STEEP (5 letters), UPSCALE (7 letters), and POSH (4 letters). NESS refers to a high level of quality, STEEP implies a high cost, UPSCALE suggests a luxurious lifestyle, and POSH implies sophistication and elegance. Together, these words provide an accurate description of the term 'high end'.