Prefix

 Prefixes are used to change the meaning of a word. A syllable word or group of syllables added to the beginning of a word. Prefixes help to add meaning to words and make it possible to create new words that are easily understood everywhere. Understanding a few prefix examples will help you understand the logic of new words and use them appropriately.

For example, consider the prefix de-. This prefix means getting something back.  It is usually added to a verb.  You can then activate the verb. Likewise, you can parse, add to other verbs.

Prefix	Meaning	Example
Anti-	Against	Antifreeze, antithesis
De-	Opposite	Decode, decompose
Dis-	Not, opposite of	Disconnect, disembark
Em-	Cause to	Embrace, emphasis
En-	Cause to	Encode, encounter
Fore-	Before	Forecast, foresight
In-	İn	Infield, infiltrate
Im-	İn	Imbalance
In-, im-, il-, ir-	Not	Injustice, impossible, irregular
Inter-	Between	International, interact
Mid-	Middle	Midday, midway
Mis-	Wrongly	Misfire, misunderstand
Non-	Not	Nonsense, nonexist
Over-	Over	Overlook, overdue
Pre-	Before	Prefix, preschool
Re-	Again	Regain, return, rebuild
Semi-	Half	Semifinal, semicircle
Sub-	Under	Subeditor, subterranean
Super-	Above,	Superman, superstar
Trans-	Across	Transatlantic, transport
Un-	Not	Unfriendly, unsatisfied
Under-	Under	Understand, undersea