UNIQUE WORDS game to increase our vocabulary - alphabetical order

Caliginous - misty, dim; obscure, dark.

Egregious- Used to describe something that is obviously very bad or shocking.  

Grok - understand (something) intuitively or by empathy

Haberdasher: someone whose job is selling cloth, pins, thread, etc. used for sewing, or a shop where these things are sold

Impetus - the force that makes something happen or happen more quickly

Jumboree:  a noisy celebration;

Lionhearted: extraordinarily corageous

Novelistic:  of, relating to, or characteristic of novels

Paradox - a seemingly absurd or self-contradictory statement or proposition that when investigated or explained may prove to be well founded or true.

Rats!—used to express disappointment, frustration, or disgust  

Tropism - the turning of all or part of an organism in a particular direction in response to an external stimulus.