A deep purple colour can be described in many ways, including the six words found in the crossword: PLUM (4 letters), AUBERGINE (9 letters), LILAC (5 letters), INDIGO (6 letters), ANIL (4 letters) and PUCE (4 letters). PLUM is a dark purple colour, while AUBERGINE is a deep, dark purple. LILAC is a lighter shade of purple, while INDIGO is a deep blue-purple. ANIL is a bluish-purple, and PUCE is a reddish-purple. All of these colours are considered to be part of the deep purple colour family.