Week 1
Week 5
Week 9
Week 12
Week 18
100

to lose water or moisture

dehydrate

100

to speak or read something to a person who writes it down;

dictate

100

a science that deals with things that are alive, such as plants and animals

biology

100

a vehicle with two wheels that a person rides by pushing on foot pedals

bicycle

100

a supply of weapons

armory

200

living or taking place in water

aquatic

200

an official order given by a person with power or by a government

edict

200

the art, process, or job of taking pictures with a camera

photography

200

happening twice a year

biannual

200

to fight in order to keep someone or something safe

defend

300

a small harbor where small boats can dock

marina

300

the art of making beautiful handwriting

calligraphy

300

a tiny particle of light or electromagnetic radiation

photon
300

able to use both hands equally well

ambidextrous

300

a tool used for cutting paper

scissors

400

a glass take or bowl in which fish live

aquarium

400

words that are written on or cut into a surface

inscription

400

a US city founded by William Penn

Philadelphia

400

having or showing very different feelings (such as love and hate) about someone or something at the same time

ambivalent

400

a tooth that has a sharp edge for biting

incisor

500

on or near the sea

maritime

500

to say the opposite of something that someone else has said; to deny the truth

contradict

500

a person who loves or collects books

bibliophile

500

able to be understood in more than one way

ambiguous

500

a large group of ships that are used for warfare

armada