prefix

/ˈprifɪks/

an affix that is added in front of the word

中文释义：前缀

Adding the prefix 'un-' to 'happy' creates the word 'unhappy'.

在 'happy' 前加上前缀 'un-' 就构成了 'unhappy'。

Many English words are formed by attaching a prefix to a root word.

许多英语单词是通过在词根上附加前缀构成的。