ملخص الدرس / الرابعة متوسط/اللغة الإنجليزية/File 2/Prefixes

the rule

Several prefixes are used in English to give words (nouns, verbs or adjectives) a negative meaning. The most common ones are:

il / im / in / ir / un / dis

There are no rules to choose them, as each one goes with certain words and not with others, so the best is to use your dictionary. However, there are certain rules that apply to the Latin prefix in- (which is often followed by words of Latin origin):

In fact, those three prefixes are just variations of in

The rest of prefixes have either a Latin or a Greek origin, and are normally followed by words coming from those languages. Un- is the only prefix of English origin and it's mostly attached to native words, but it combines with non-native words too. 

When new words are coined, it is usually the preferred prefix, for example in ungooglable and unhackable.

the table

un in ir il  im

unfair

 unable

 unsafe

 unkind 

unlucky 

unpack

 undress 

unpleasant 

unpredictable

 unarmed

 unjust 

unfortunate

 unacceptable

 unconscious 

untrue 

uncertain

 unpack

 unlock

informal 

injustice

 invisible

 incredible 

indecisive 

inadequate 

independence

 inefficiency 

inexperienced 

inability 

intolerant

 invalid

 inactive

 incompetent 

incapable

incomplete

 inexperience

inaccuracy

irrational 

irrelevant

 irrationality 

irregular

 irresistible

 irresponsible

 irreverent

illegality 

illiterate 

illogicall 

illegitimate 

illegible 

illicit

 illegal

 

imperfect 

imbalance 

immaturity 

immobility 

immodest

 impartial

 imperfect

 impolite

 impersonal

 impiety 

impractical