Keen enjoyment is a term used to describe an intense level of pleasure or enthusiasm. The crossword solutions for this term are GUSTO (5 letters), RELISH (6 letters), ZEST (4 letters) and JOIEDEVIVRE (11 letters). GUSTO refers to a hearty and enthusiastic enjoyment of something, while RELISH implies a strong liking or appreciation. ZEST is a term used to describe a lively and spirited enjoyment, and JOIEDEVIVRE is a French phrase meaning 'joy of living'. All of these words can be used to describe keen enjoyment.