iota

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

temerity

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

Elucidate

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

expunge

The judge directed the court stenographer to expunge the last three sentences of the witnesses testimony because she was hysterical.

gait

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

purloin

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

capacious

This mini-van has a capacious storage area which makes it an ideal choice for larger families.

trepidation

After listening to the teacher describe how important the NYS ELA test was and all the preparation needed to do well on the test, Pam began to feel her trepidation began to grow about failing the assesment   

irascible

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

pithy

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