Antonym
Synonym
Plural
Multiple meaning
200

up

down

200

small

tiny

200

mouse

mice

200

ring

jewelry worn on finger

sound made by bell or phone

300

pretty

ugly 


300

joyful 

happy

300

foot

feet

300

change

to make different/replace

coins as opposed to paper money


400

skinny

 fat

400

beautiful 

pretty 

400

tooth

teeth

400

pound

unit of weight

to strike heavy blows

500

hard 

easy

500

thin 

skinny 

500

goose

geese

500

watch

observe/look

jewelry worn to tell time

600

weird 

normal

600

begin

start

600

child

children

600

shed

lose hair

small building for storage