Pretentiously showy is a term used to describe something that is overly decorated or ostentatious. This can be seen in the three crossword solutions: ARTSY (5 letters), ARTY (4 letters), and GLITZY (6 letters). ARTSY and ARTY both refer to something that is creative and artistic, while GLITZY implies something that is flashy and glamorous. Together, these words suggest something that is excessively decorated and attention-seeking.