The term 'multicoloured' can be described in a variety of ways. The 6-letter word 'MOTLEY' is an adjective meaning 'made up of many different colors or types'. The 4-letter word 'pied' is an adjective meaning 'having sections or patches colored differently and usually brightly'. The 7-letter word 'RAINBOW' is a noun referring to an arch of colors formed in the sky, usually seen after rain. The 13-letter word 'KALEIDOSCOPIC' is an adjective meaning 'having a complex pattern of many colors'. All of these words describe the term 'multicoloured' in different ways, emphasizing its variety of colors.