Lackadaisical

Dictionary definition:

• Without interest, vigour, or determination; listless; lethargic: a lackadaisical attempt.
• Lazy; indolent: a lackadaisical fellow.

Unctuous

Dictionary definition:

• Of the nature or quality of an unguent or ointment; fatty; oily; greasy.
• Having a smooth, greasy feel, as certain minerals.
• Insincerely or excessively suave or ingratiating in manner or speech; marked by a false or smug earnestness or agreeableness.

Avuncular

Dictionary definition:

• Of or pertaining to an uncle.
• Resembling an uncle, especially in kindness or indulgence.

Furtive

Dictionary definition:

• Taken, done, used, etc., surreptitiously or by stealth; secret: a furtive glance.
• Sly; shifty: a furtive manner.

Extemporaneous

Dictionary definition:

• Composed, performed, or uttered on the spur of the moment, or without previous study; unpremeditated; impromptu.
• Prepared beforehand but delivered without notes or text.

Tintinnabulation

Dictionary definition:

• A tinkling sound, as of a bell or bells.

Perfervid

Dictionary definition:

• Ardent; impassioned; marked by exaggerated or overwrought emotion.

Quixotic

Dictionary definition:

• Caught up in the romance of noble deeds and the pursuit of unreachable goals; foolishly impractical especially in the pursuit of ideals.
• Capricious; impulsive; unpredictable.

Quixotic refers to the eccentric, generous idealism of Don Quixote, the hero of the extremely famous satiric romance by Miguel de Cervantes.

Plenipotentiary

Dictionary definition:

• Containing or conferring full power; invested with full power; as, “plenipotentiary license; plenipotentiary ministers.”

Or noun:

• A person invested with full power to transact any business; especially, an ambassador or diplomatic agent with full power to negotiate a treaty or to transact other business.

Kerfuffle/kafuffle

Dictionary definition:

• Brit word, meaning a fuss or commotion.