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Using prefixes

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Explainer Video

Tutor: Jonathan

Summary

Using prefixes

In a nutshell 

A prefix is a letter or group of letters placed at the beginning of a word to create a new word with a different meaning. Prefixes are placed at the front of a 'root' word. In this summary, you will learn the meanings of common prefixes and how to use them.



Prefixes

Prefixes can be added to the beginning of a word to change its meaning. They can be made up of one letter or a group of letters.



'dis' and 'mis'

Both 'dis' and 'mis' have a negative meaning and create a negative word when added to the root word.


prefix

meaning

example prefix+root word

dis-
negative meaning
dishonour (dis+honour), disagree (dis+agree)
mis-
negative meaning
misbehave (mis+behave), miscalculate (mis+calculate)



'in', 'il', 'im', 'ir'

The prefix 'in' means 'not' and can sometimes change into 'il', 'im' or 'ir' based on the root word.


​​Prefix

Meaning

Example Prefix+root word

in-
not
inaccurate (in+accurate), invisible (in+visible)
il-
illogical (il+logical), illegal (il+legal)
im-
impossible (im+possible), impassable (im+passable)
ir-
irrelevant (ir+relevant), irrational (ir+rational)



'sub', 'super' and 'inter'

These prefixes are added to note location.


​​prefix

meaning

example prefix+root word

sub-
under
subtitle (sub+title), subtotal (sub+total)
super-
above, over
super (super+power), supermarket (super+market)
inter-
between, among
international (inter+national), interview (inter+view)




're', 'anti' and 'auto'

These prefixes have different meanings, they are explained in the table below.


​​prefix

meaning

example prefix+root word

re-
again, back
redo (re+do), replay (re+play)
anti-
not, against, opposite
antisocial (anti+social), antibiotic (anti-biotic)
auto-
self, own, automatic

autopilot (auto+pilot), autobiography (auto+biography)​



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Using suffixes

Unit 1

Using suffixes

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Using prefixes

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Using prefixes

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FAQs - Frequently Asked Questions

What does the prefix 'in' mean?

The prefix 'in' means 'not' and can sometimes change into 'il', 'im' or 'ir' based on the root word.

What do 'dis' and 'mis' mean when used as at the beginning of a word?

Both 'dis' and 'mis' have a negative meaning and create a negative word when added to the root word.

What is a prefix?

A prefix is a letter or group of letters placed at the beginning of a word to create a new word with a different meaning.

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