Words
Definitions
Sentence
Synonyms
Antonyms
100

Accumulate

To increase in number or amount; to pile up, collect, or gather.

100

Severe; extreme

Drastic

100

A ___ rain has been falling for nine days.

Perpetual

100

Collect

Accumulate

100

Mild

Drastic

200

Aggravate

To make worse 

To anger or annoy

200

Spending, costing, or using more that is required 

Extravagant

200

Coal and lumber are natural ____

Resources

200

Bother

Aggravate

200

Frugal

Extravagant

300

Conserve

To save by using carefully.

300

Careful in spending or using something

Frugal

300

Cooks sometimes __ lemon for vinegar in salad dressing.

Substitute 

300

Preserve

Conserve
300

Clean

Impure

400
Contaminate 
To harm by contact with something undesirable 
400

Something that is harmful or dirty

Impurity

400

Their firm belief that they would be rescued ___ them

Sustain

400

Pollute

Contaminate

400

Safety

Peril

500

Diminish 

To make or become smaller or less; to reduce

500

Danger; something that is dangerous

Peril

500

Clean water is ___ for our healt

Vital

500
To reduce

Diminish

500
Abrupt 

Perpetual