The term 'hard to please' can be described by a variety of words, such as PICKY (5 letters), FUSSY (5 letters), FINICKY (7 letters), ORNERY (6 letters), CHOOSY (6 letters), PARTICULAR (10 letters), FASTIDIOUS (10 letters), and ERECT (5 letters). These words all describe someone who is difficult to satisfy and has very specific standards. They are often seen as being overly critical or demanding, and may be difficult to please due to their high expectations.