EtymOnline:Online English EtymOnline.com is a site that provides an abbreviated study of English etymology, allowing users to find the etymology of English words, digging out the roots from the etymology, and digging out words with the same root from the root. This allows you to find out what the root and suffix of a word means and where it evolved from.

The mystery of English vocabulary: learners of English often Although you know the moon, you don't know lunar, luniform, lunate, demilune, plenilune... These words are all related to "moon", but for some reason the face of "moon" is missing from these words.

It turns out that English vocabulary has a characteristic: that is, each basic meaning has two (or more than two) symbols to express, such as: moon, lun are said to be "moon"; see, vis are said to "see" and so on. In English, there is one type of symbols that can be used independently - single words (such as moon, eat, etc.), and another type of symbols that cannot be used independently - root words (such as lun, vis, etc.), it is this " It is this phenomenon of "one meaning, two symbols" that has formed tens of thousands of English words.

English roots are limited, but they have a lot of power, they "lead" and "govern" about 80% of the vocabulary in English, which is our They "lead" and "govern" about 80% of English vocabulary, which is the basis for memorizing a large number of English words quickly, scientifically, and effectively.

For English scholars, to study the English language in depth they must have tools to support the search for etymology, and some words are very convoluted in their variations. For example, husband, which actually means master of the house, is related to agriculture because the main thing in ancient times was agriculture, so the etymology of husband is related to agriculture, and one evidence is husbandry.