prefix

• 加在词根前面的词缀，用来改变词义或构成新词。也指加在名称、号码等前面的字或数字。

A noun referring to an affix placed at the beginning of a word to modify its meaning or create a new word.

1. Affix added to the beginning of a wordB1formal

   A letter or group of letters placed at the start of a word to change its meaning or create a new word.

   前缀

   • The prefix 'un-' in 'unhappy' means 'not'.
   • Adding the prefix 're-' to 'do' creates 'redo', meaning to do again.
   • The word 'preview' uses the prefix 'pre-', meaning before.

   反义词suffix

• 动词，指在某词前加上字母、音节或词，或指在开头加上某物作为引言。

A verb meaning to add a letter, syllable, or word at the beginning of another word, or to add something as an introduction.

1. Attach a prefixB2formal

   To add a letter, syllable, or group of letters at the beginning of a word to change its meaning.

   加前缀

   • In English, we often prefix 'un-' to adjectives to make them negative.
   • You can prefix 're-' to many verbs to indicate doing something again.
   • The teacher explained how to prefix 'dis-' to form antonyms.

   同义词prepose