Make a word with a prefix
Prefix meanings
Make a word with a suffix
Suffix meanings
Add a prefix and/or suffix to a root word
100

pre-

prefix, premature, prejudice . . . 

100

anti-

against

100

-less

fearless, hopeless, speechless . . . 

100

-phobia

fear of

100

agree

example: disagreement

200

bio-

biology, biography, biopic . . . 

200

pre-

before

200

-ful

wonderful, painful, cheerful . . . 

200

-meter, -metry

relating to measurement

200

appoint

example: disappointing 

300

sub-

subway, submarine, submerge . . . 

300

geo-

earth

300

-ness

happiness, kindness, thoughtfulness . . . 

300

-logy

study of

300

friend

example: unfriendly

400

bene-

benefit, beneficial, benevolent . . .  

400

bi-

two

400

-ism

racism, socialism, paternalism . . . 

400

-cide

act of killing

400

normal

example: abnormally

500

trans-

transport, transform, translucent . . . 

500

astro-

star

500

-ist

guitarist, conformist, cyclist . . . 

500

-graph

relating to writing

500

place

example: replacement