Rhymes with That
Rhymes with Un
Rhymes with The
Rhymes with Ed
100

Adult kitten

Cat

100
"This is so ____!"

Fun

100

When something is given away

Free

100

No longer alive

Dead

200

Not bumpy

Flat

200

Type of bread

Bun

200

Tiny bug that bites

Flea

200

On a sandwich

Bread or Spread

300

Flying mammal or baseball equipment

Bat
300
"I don't have any." 

None

300

Bendy part of your leg

Knee

300

Top of your body

Head

400

A whiny child

Brat

400

2000 pounds or a lot of something

Ton

400

Extreme happiness 

Glee

400
Past tense of bleed

Bled

500

Tiny buzzing insect

Gnat

500

A very religious woman

Nun

500

Grows from the ground

tree

500

Another option

Instead