UNIQUE WORDS game to increase our vocabulary - alphabetical order

Jactitate - To jactitate is to toss around restlessly.

Longueur - a tedious passage in a book or other work

nonremittal - act of failing to meet a financial obligation.

Pell-Mell,    in a confused, rushed, or disorderly manner, recklessly hasty or disorganized; headlong,

                          a state of affairs or collection of things characterized by haste or confusion.

Redundant - not or no longer needed or useful; superfluous,

                              "many of the old skills had become redundant"

Timorous - showing or suffering from nervousness, fear, or a lack of confidence

                          "a timorous voice"

Vellum - fine parchment made originally from the skin of a calf, 

                    smooth writing paper imitating vellum.

Xanthos - was the Ancient Greek word for yellow, and as such is the root of a number of mainly scientific words referring to yellow-colored things.

If you’re xanthocroic you have fair hair and pale skin; and if you’re xanthodontous, you have yellow teeth.