Arboricoline

adjective; growing upon trees, such as certain parasitic plants, lichens, etc.

The arboricoline slime mold crept up the tree's trunk, threatening to turn the entire tree a sickly shade of yellow. 

Overzeal

noun; abundant ardor, unnecessary fervor.

The small child examined the video games with the same overzeal that a chef shows for food.
You might hear a different form of this word more commonly: overzealous. "Overzealous" is the adjective form of "overzeal."

 

Desultory

adjective, passing from one thing or subject to another without order or natural connection, disconnected, not methodical, random.

Although I could not figure out the complex dance number, I managed to throw together some desultory moves and make a convincing imitation of the dance.

Penultimate

adjective; next to the last.

As they walked, they came upon the penultimate sign before reaching the city.

Surreptitiously

adverb; in a surreptitious manner, by stealth, without authority, fraudulently.

The young boys surreptitiously stole candy from the teacher's desk.

Conflagration

noun, a great, destructive fire.

The conflagration, set by a group of villainous children, burned the entire city to the ground.

Miscreant

noun; an evil person, a criminal, a villain.

The miscreants who robbed the candy store were punished spectacularly.

Meritorious

adjective, deserving reward or notice; worthy of fame, happiness, or praise.

The young child's meritorious accomplishment of finishing his homework was rewarded with a trip to the ice cream shop.

Dankish

Adj. slightly dank (humid, disagreeably damp), moist.

The dankish basement was filled with old mold and mildew.

Quadrumanous

noun, having all four feet adapted to function as hands.

The quadrumanous monkey had handlike feet, allowing it to walk across branches without falling.

Regime

Noun, a political system, a social system, a social order.

The dictator's new regime opened a new era of doom.