Unrelenting Her tireless and unrelenting discipline is noticeable in her exceptional work.

not yielding in strength, severity, or determination

Deranged I'm afraid that my behavior was a bit deranged when I found out that the concert was sold out.

mad; insane

Vigorous Despite a vigorous effort, he wasn't able to outrun his opponent.

strong, healthy, and full of energy

Triumph The country’s military triumph finally brought peace to the war-torn area.

a great victory or achievement

Primitive All people have a primitive instinct to flee or fight in the face of danger.

relating to, denoting, or preserving the character of an early stage in the evolutionary or historical development of something

Gore She hates horror movies because of all the gore.

blood that has been shed, especially as a result of violence

Haze Because of the the dense haze, the road was hard to see.

a slight obscuration of the lower atmosphere; a state of mental obscurity or confusion

Torrent A torrent of water came rushing down the canal.

a strong and fast-moving stream of water or other liquid

Fiasco To stop a repeat of last year's fiasco; no more animals are allowed on site.

a complete failure, especially in a ludicrous or humiliating way

Scrounge All I could remember was seeing the homeless person scrounging in the dumpster.

seek to obtain (something, typically food or money) at the expense or through the generosity of others or by stealth

Demented He had a demented expression on his face that made me feel uneasy.

driven to behave irrationally due to anger, distress, or excitement

Subsist I can not subsist on bread and water alone.

maintain or support oneself, especially at a minimal level

Droll As the class clown, David had a droll comment for every point of the discussion.

curious or unusual in a way that provokes dry amusement

Baffle This math problem baffles me.

totally bewilder or perplex

Profusely When the race was over, the runners were sweating profusely.

pouring forth liberally