Candid

Completely honest; straightforward

Let's be candid, Buffy is the greatest tv show ever!

Inference; guesswork

"Buffy, you do not have all the facts yet.  Your belief that Spike is good is pure conjecture at this point.  Do some more digging!"

Instructive

Giles' book collection was didactic, Willow learned all about the Orb of Thesela.

A mild, indirect, or vague term substituting for a harsh, blunt, or offensive term.

Example:  Buffy passed away at the end of one season.  "Passed away" is a euphemism for dying.

To infer or estimate by extending or projecting known information.

We know that Angel killed Ms. Calinder, and we know that Giles love Ms. Calinder.  From this, we can extrapolate his intention and location - he is going to Angel's place to kill him.

Lacking cohesion or connection.

Cordelia's rant about Zander kissing Willow was so incoherent that Buffy asked her to slow down and repeat herself.

To imply or communicate stealthily.

Zander insinuated that he loved Buffy, but he never came out and said it.

Easily understood; clear.

After Giles provided a lucid explanation of the situation, we all knew what had to be done.

The art of using language effectively and persuasively.

With Giles' extensive education and experience, he is an expert in the art of rhetoric.

Quickness, accuracy, and keenness of judgement or insight

Willow's computer acumen was so well respected that Giles left the research on the judge up to her.

dexterous;deft

Buffy is an adroit slayer when she handles Mr. pointy so well.

To find out, as through investigation or experimentation.

Buffy ascertained too late that Angel's message was a trap for the scooby gang rather than for her.

Shrewd;clever

It was very astute of Xandar to mention the crayon box to Dark Willow as she was about to destroy the world.

Careful;prudent;discreet.

Giles urged everyone to be circumspect about Buffy's true identity as the vampire slayer while at school.

To scatter widely;as in sowing seed

The news that Harry was dating Ginny disseminated quickly throughout Hogwarts.

Deep,extensive learning

Giles' erudition was so extensive that he could answer any demon question posed to him.

The application of scientific principles to agriculture, especially to animal breeding.

Demon husbandry is something none of us would like developed!

Excessively concerned with book learning and formal rules.

Gile's pedantic behavior become very annoying, he would never pass up the chance to correct our grammar and pronounciation of sacred texts.

Shrewd;clear-sighted

Spike's perspicacious mind allowed him to ignore the First's messages and do what was right.

Practical

Willow urged buffy to be pragmatic, and not run into the trap all by herself.

exhibiting unusually early intellectual aptitude or maturity.

Ali Lehr was such a precocious child that she once solved the math puzzle before the adults even started!

formal proposal

I received a formal prospectus from Longwood to become a professor in Farmville.

basic;elementary;in the earliest stages of development.

Willow's rudimentary wicca skills prevented her from doing much beyond moving a pencil with her mind.

difficult to understand

Gile's lecture on demonology was so abstruse we left without any insight into the beast we were about to face.

emotionally hardened;unfeeling

Xandar's callous remark about Angel hurt Buffy very much.

intricate;complex

Buffy's plan to kill the first was so convoluted that it left everyone confused and worried.

enigma

a puzzle, myster, or riddle

In the first two seasons, Angel was an enigma waiting to be better understood.

difficult to fathom or understand;impenetrable

Buffy's romance with Spike was so inscrutable to her friends that they began to distance themselves from her.

inclined to keep silent;reserved

I would argue that Angel was the most reticent character in Buffy.  Who would you choose?

unemotional;serious

The leader of the watcher's council was often staid.