The crossword solution for the term 'Kind of UNCLE' is 'Dutch', which is a five-letter word. Dutch is a language spoken in the Netherlands, Belgium, Suriname, and other parts of the world. It is also the name of the people who speak the language. In some cultures, an UNCLE is referred to as 'Oom' in Dutch, which literally translates to 'UNCLE'. Therefore, the term 'Kind of UNCLE' can refer to someone who is Dutch.