PREFIX
1.a-:of;on;intensive;negative,not,without;ad-;ab-.
2.ab-:away from,off.
3. ad-:to;at;for.
4. aer(o)- :relating to air .
5.al-:all.
6.ambi-:on both sides,around.
7.amphi-:on both sides,around.
8.an-:negative,not,without.
9.ana-:upon,up,on.
10.ante-:before.
11.anti-:against.
12.arch-:chief,first .
13.astro- :relating to stars .(planets \space )
14.aqu(a)-:relating to water.
15.audi (o)-:relating to sound and hearing .
16.auto-:self,without help .
17.be-:to make;to cover with;upon;by;intensive.
18.bene-:well,good.
19.bi-:double,two.
20.bio- :relating to life and living things .
21.by-:less important ;near .
22.cata-:down,downwoards.
23.cent(i)-:hundred ,hundredth .
24.circum-:around,round about.
25.con-:together with,wholly.
26.contra-:against,opposit.(contro-,counter-)
27.cross-:through;across;many.
28.de-:down,downward;apart;negative;intensive.
29.deca-:ten.
30.deci- :tenth .
31.demi-:half.
32.di-:double,twice.
33.dia-:through,between,across.
34.dich(o)-:two.
35.dis-:apart; negative;intensive.
36.duo-:two,double.(du-,dou-,do-)
37.dys-:badly,ill.
38.en-:to make;to put in(on \around ).
39.epi-:upon.
40.eu-:well.