unlucky是名词吗

But after forty days without a fish the boy's parents had told him that the old man was now definitely and finally salao，which is the worst form of unlucky, and the boy had gone at their orders in another boat which caught three good fish the first week.

of unlucky这里的unlucky是名词吗？

unlucky是形容词，这个定语从句是给读者讲解salao的意思是，即某国语言中salao是最unlucky的意思。