Excuse me, the suffix ful means rich meaning. What are the English words?

colourful, cupful, etc.

The following is a relevant introduction to English:

English (English: English) is a West Germanic language that was first spoken by Britain in the Middle Ages and became a The most widely spoken language in the world.

The Anglo tribe, the ancestors of the British, was one of the Germanic tribes that later migrated to the island of Great Britain, called England. Both names come from Anglia, a town on the Baltic Sea peninsula. The language is closely related to Frisian and Lower Saxon, its vocabulary is influenced by other Germanic languages, especially Norse (North Germanic), and it is written largely in Latin and French.

English has developed for more than 1,400 years. The earliest form of English is a group of West Germanic (Ingvaeonic) dialects brought to Britain by Anglo-Saxon immigrants in the 5th century, collectively known as Old English. Middle English began at the end of the 11th century when the Normans conquered England; in 1476, William Caxton introduced the printing press to England and began publishing the first printed books in London, expanding the influence of English.

The above information refers to Baidu Encyclopedia - English