Prefixes
What are prefixes?
A prefix is a short group of letters which is put before the base form of another word.
Prefixes are not independent words, for example PRE, UN, DIS. Often a prefix makes a word that without the prefix isn’t a word, like: EXCLUDE and make EXCLUDE (CLUDE alone doesn’t have a meaning). Many prefixes are separated from the base word by a hyphen, e.g. ANTI-CLOCKWISE.
The meanings of frequently used prefixes:
| Prefix | Significado | Ejemplo |
| Re | Again | Redo, resend, rebuild |
| Post | After | Postgraduate |
| Pro | In favour of | Pro-Spanish, Pro-Obama |
| Mis | Badly, wrongly | Misunderstand, misinform |
| Non | The opposite meaning of the word | Non-existence, |
| Over | Too much | Overwork, overreact |
| Un | The opposite meaning of the word | Unnecessary, uncomfortable |
| Dis | The opposite meaning of the word | Dislike, disconnect |
| Ex | Former | Ex-president, ex-husband |
| Anti | Against | Anti-american, anticlimax |
| Under | Below, not enough | Underestimate, underpayment |
| Co | Together, joint | Co-pilot, co-founder |
| Out | More/better than another | Outbid |
| Sub | Under, less than | Subordinate, subdelegation |
| Fore | Going before | Forewarn, foresee |
| Bi | Two | Bilingual, bipolar |
| De | Separation/the opposite meaning of the word | Detatch, defrost |
There are many more prefixes:
- trans, inter, de, be, in, auto, counter, hyper, mal, mega, mini, mono, tri, vice, etc.
Grammar Guide
| 1. | Do Does |
| 2. | Make Do |
| 3. | Question Tags |
| 4. | Some Any |
| 5. | To Be |
| 6. | Past Simple |
| 7. | Prefixes |
| 8. | Present Perfect |
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