Urge  

Verb | urj
to encourage or persuade

Unveil  

Verb | uhn-veyl
to make visible; to reveal

Underscore  

Verb | uhn-der-skawr
to emphasize or give additional weight to

Ubiquitous  

Adjective | yoo-bik-wi-tuhs
being everywhere at once

Tremendous  

Adjective | trih-men-duhs
very large, good, or bad in degree or size

Treacherous  

Adjective | trech-er-uhs
dangerous and unstable

Teeming  

Adjective | tee-ming
abundantly filled (usually with living organisms)

Taut  

Adjective | tawt
pulled tight