Definition
Part of Speech
Synonym
Word
100

Authoritatively required; obligatory

Mandatory

100

Metaphysical 

adj.

100

Mandatory

1. required

2. optional

3. voluntary

1. required

100

Luminous

Giving forth light; bright; shining; easily understood

200

Obvious; conspicuous; offensively loud

Blatant

200

Blanch

v.

200

Blanch

1. lighten

2. tan

3. sunburned

1. lighten

200

Blanch

To become or turn pale; to make white; to bleach; to scald edibles

300

without piety; irreverent; blasphemous

impious

300

impervious

adj.

300

Blatant

1. subtle

2. evident

3. unclear

2. evident

300

ephemeral

lasting only a short time; short lived; transitory

400

completely resistant to penetration; unaffected; unreceptive; immune.

impervious

400

incredulity

n.

400

recreant

1. frightened

2. brave

3. daring

1. frightened

400

Lugubrious

Excessively dismal; mournful

500

Pertaining to speculation about ultimate reality; beyond the physical world and traditional sciences; extremely abstract or subtle

Metaphysical

500

ephemeral

adj/n

500

impervious

1. affected

2. impermeable

3. irresistant 

2. impermeable

500

incredulity

unwillingness to believe; disbelief; skepticism