Thứ Năm, 11 tháng 10, 2012

Lists of common prefixes in English

Lists of common prefixes in English


Prefix Meaning Example



Prefixes that means “no” or “not”
in-, il-, im-, ir- not Insecure, illegal, immoral, irresponsible
non- not nonviolent, non-poisonous
un- not unhappy, unkind
dis- not, opposite of, undo displease, disservice, disconnect
mis- wrong, bad mistreat, mistake
anti- against antivirus, antithesis, anti-war
contra- against contradict, contrary

Prefixes that relate to time
ex- former ex-boss, ex-spouse
post- after posttest, posterior
pre- before predict, precede
re- again repeat, recycle




Prefixes that show placement
ab- away, away from absent, abnormal
co-, col-, com- together with cooperate, colleague, community
de- down form, away descend, depart
dis- away displace, disappear
ex- out exit, export, ecterior
in- in inside, interior, inhale
pro- forward, ahead progress, promote
re- back return, revert, report
tele- far, distant television, telepathy
trans- across transport, transfer

Prefixes that indicate how many or how much
extra- beyond, outside extraordinary, extracurricular,
micro- small microscope, micro-organisms
semi- half semiconscious, semi-formal
super- over, above supervisor, superlative

Prefixes that show number of quantity
uni-, one united, uniform,
dec-, deci- ten decimal, decade, decimate
cent- hundred century, cent
mill-, kilo- thousand millennium, kilowatts
Remember that just because a word begins with the same letters as a prefix, it does not necessarily contain a prefix. The prefix pre means “before”, as in predict and prehistoric. However, the word “pressure” also begins with the letters “pre”, but it has no connection with the prefix pre.
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