UNIQUE WORDS game to increase our vocabulary - alphabetical order

Rescission - the revocation, cancellation, or repeal of a law, order, or agreement.

"the plaintiff agreed to the rescission of the agreement"

tachyphylaxis
noun

1. Medicine/Medical. immediate, temporary immunization against the effects of injection of a toxic extract owing to previous small injections of the same extract.
2. a decreased response to a medicine given over a period of time so that larger doses are required to produce the same response.

Venial - denoting a sin that is not regarded as depriving the soul of divine grace.

Yare - (of a ship) responding promptly to the helm; easily manageable

Addle - ad·dle
/ˈadl/  make unable to think clearly; confuse.

CACOLOGY

Cacology literally means “evil-speaking,” and is used to refer to a poor choice of words or noticeably bad language. 

Likewise, a caconym is an ill-fitting or unpleasant name; a cachotechny is a poorly constructed device or work of art; and a cacotype is either a printing error, or a libelously insulting printed description or account.

Gamomania - obsession with issuing odd marriage proposals

Kawaii - the quality of being cute, or items that are cute.