-ness
-less
-ous
-or
-ist/ -ity
100
a felling of being alone too much

loneliness

100

When you cannot change something that has happened, you might feel _______________.

powerless

100

If something is very funny it is ___________. 

humerous

100

Someone who inspects things is an ___________.

inspector

100

A person who plays the piano

pianist

200

an act of assisting

helpfulness

200

It is a sunny day with clear blue skies. The sky is __________less. 

cloudless

200

If you are willing to give, you are _____________.

generous

200

A college teacher

professor

200

an event that causes great harm or distress

calamity

300

refusing to change one's mind

stubbornness

300

If something isn't your fault, you are ___________less.

blameless

300

A rattlesnake's bite is ____________.

poisonous

300

Someone who comes to see someone

visitor

300

the skill or talent to do something

ability

400

a large, wild area where no people live

wilderness

400

If the pool goes down forever, it is 

bottomless

400

Something that continues and never stops is:

continuous

400

A person who watches sports s_ _ _ _ _ _ _ _ 

spectator

400

a person who plays the violin

violinist

500

If you eat a lemon, you will taste its

sourness

500

If you have a shirt without sleeves, it is ___________.

sleeveless

500

something that is very large is e_ _ _ _ _ _ _

enormous

500

A person who corrects a book before it is published. 

editor

500

safety; being secure

security