Intangible

Intangible - not concrete or material, something which cannot be sensed

Sample Sentence:
Intangible concepts are difficult for small children to understand since they think in concrete terms.

Castigate

Castigate - to rebuke harshly or punish severely

Sample Sentence:

Before you castigate me again for being late, you should check your watch.

Commemorate

Commemorate - to honor the memory of something or serve as a memorial of it

Sample Sentence:
There will be many services throughout the country to commemorate the heroism of those who fought back against evil incarnate on United Flight 93 on September 11, 2001.

Absolute

Absolute - 2 parts of speech
noun - perfect, complete, independent of comparisons
adjective - unadulterated, unrestrained, unlimited, unequivocal

Sample Sentence:
Do you believe the right to life is relative or absolute?

Prodigious

Prodigious - fabulous or marvelous

Sample Sentence:
Sarah Palin's prodigious debut on the world stage was a sight to behold.

Tempestuous

Tempestuous - turbulent or stormy

Sample Sentence:
Their tempestuous relationship caused frustration for all their friends.

Hypochondriac

Hypochondriac - one who constantly worries about their health; often believes they are ill.

Sample Sentence:
The hypochondriac visited his doctor monthly with a new list of symptoms.