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100

(n) a piece of a homogeneous solid substance having a natural geometrically regular form with symmetrically arranged plane faces; highly transparent glass with a high refractive index

crystal

100

(v) seize and hold firmly

grasp

100

(plural n) things remembered from the past; recollections

memories

100

(n) a measurement used in cooking, equivalent to 1/6 fluid ounce or 4.9 ml

teaspoon

100

(n) the day before today

yesterday

200

(v) cause (someone) to do something through reasoning or argument

persuade

200

(n) a space entirely devoid of matter; a device used for cleaning

vacuum

200

(n) the action of leaving, especially to start a journey

departure

200

(n) a form of energy resulting from the existence of charged particles (such as electrons or protons), either statically as an accumulation of charge or dynamically as a current

electricity

200

(n) the action of giving someone support, confidence, or hope

encouragement

300

(adj) feeling or showing deference and respect

respectful

300

(adj) worthy of being or likely to be noticed especially as being uncommon or extraordinary

remarkable

300

(n) an Italian dish consisting largely of pasta made in long, slender, solid strings typically with a sauce

spaghetti

300

(v) practice (a play, piece of music, or other work) for later public performance

rehearse

300

(n) a pause or break; an interval between parts of a play, movie, or concert

intermission

400

(adj) successful in material terms; flourishing financially

prosperous

400

(n) disagreement, typically when prolonged, public, and heated

controversy

400

(adj)  tending to infiltrate, metastasize, and terminate fatally; evil in nature, influence, or effect

malignant

400

(n) an army officer of high rank, in particular (in the US Army, Air Force, and Marine Corps) an officer above a lieutenant and below a brigadier general

colonel

400

(adj) spending a lot of time studying or reading

studious

500

(adj) (of a place) deserted of people and in a state of bleak and dismal emptiness

desolate

500

(adj) lively in temper, conduct, or spirit 

vivacious

500

(adj) indicating the nature of a future event, for good or evil

ominous

500

(n) a set of questions for obtaining statistically useful or personal information from individuals

questionnaire

500

(adj) emitting or relating to the emission of ionizing radiation or particles

radioactive