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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:

PrefixSignificadoEjemplo
Re
AgainRedo, resend, rebuild
Post
After
Postgraduate
Pro
In favour ofPro-Spanish, Pro-Obama
Mis
Badly, wronglyMisunderstand, misinform
Non 
The opposite meaning of the wordNon-existence,
OverToo much
Overwork, overreact
Un   The opposite meaning of the wordUnnecessary, uncomfortable
DisThe opposite meaning of the word
Dislike, disconnect
Ex 
FormerEx-president, ex-husband
AntiAgainstAnti-american, anticlimax
Under 
Below, not enoughUnderestimate, underpayment
Co   
Together, jointCo-pilot, co-founder
Out
More/better than anotherOutbid
SubUnder, less thanSubordinate, subdelegation
Fore
Going before
Forewarn, foresee
BiTwoBilingual, bipolar
DeSeparation/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.

Exercises Prefixes

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