iota

As far as science is concerned, there is not one iota of evidence to prove that life exists on other planets. 

A very small quantity or amount.

temerity

If you have the temerity to jump off the bridge even after hearing about the risk of instant death, you truly are a fool.

elucidate

She rad everything she could her hands on that would elucidate and expand upon her study of the human brain.

To make understood, to clarify, to shed light upon something.

(elucidated, elucidating, elucidates)

expunge

The judge directed the court stenographer to expunge the last three paragrahs the of wihness's testimony because she was hysterical.

To srike or blot something out: erase obliterate

(expunged,expunging,expunges) 

gait

We had slowed to cautious gait and were feeling our way forward so as not to bump into the trees.

purloin

Jemery must have purloined a copy of the school's master key because that is the only way he could have gotton in the cafeteria without breaking a window.

To steal something.

(purloined, purloins, purloining)

capacious

That mini-van has a capacious storage area which makes it an ideal chioce for larger family's.

Containg or capable of containing a large amount of something.

(capacity,capaciousness) 

trepidation

After lisening to the techer describe how important the NYS ELA test was and all theh preparation needed to do well on the test, pam began to feel her trepidation grow about failing the assesment.

A feeling of fear that causes you to hesitate because you think something bad or unplesant is going to happen.

(trepid, trepidly,trepidant)

irascible

Unlike this his twin brother who never seems to  get upset,colin is irascible and gets angry very quickly.

Becoming angry very easily having a bad temper.

(irascibility,irascibly,irascibleness)

pithy

Illiam shakespare was so skilled in using few words in clever and new ways that he is considered one of the most pithy writers ever.

Using few words in a clever and effective way.

(pither,pithiest)