If were the Dean, I might have called the student into my office, and read the synonyms provided in Thesaurus.com, as quoted in post #55 by PrimeMeridian, with varying tones depending on the nature of the synonym:
“active, aggressive, animated, ball of fire, breezy, brisk, demoniac, driving, dynamic, enterprising, forcible, fresh, hardy, high-powered, indefatigable, industrious, kinetic, lively, lusty, peppy, potent, powerful, red-blooded, rugged, snappy, spirited, sprightly, spry, stalwart, strenuous, strong, sturdy, tireless, tough, unflagging, untiring, vigorous, vital, vivacious, zippy”
I could actually see this as a good quick element on a TV show–maybe with a few of the adjectives removed to shorten it–but keep in “demoniac” [gravelly voice, sidelong glance of well-justified annoyance], “lusty” [outraged, questioning tone], and “zippy” [what can one say about “zippy”?]
Personally, I think “spry” ought to be avoided until the person designated as “spry” is at least 90. This strikes me as an age-ist term. It suggests to me that the speaker is surprised that the other person can still move easily . . . at his or her “advanced” age.
I am not sure what the other faculty member was doing in the Dean’s office with the young man. But given the comments reported on this thread, I think it is possible that the other faculty member had referred to the Dean as “vivacious” in a setting where it would have been okay.
Actually, as quoted, Thesaurus.com is not all that good. “Forcible” and “forceful” are quite different terms.