don
donnish
"That's a perfectly acceptable question," he replied, donnishly.
She wrote a series of donnishly clever detective stories.
He used donnishly abstract language that was difficult to follow.
His scarf was tied donnishly around his neck.
The language used is quirky and often donnishly eccentric.
SMART Vocabulary: related words and phrases
Intelligence
acuity
acumen
agility
apt
aptness
brain
gumption
highbrow
horse sense
hyper-intelligent
imaginative
perceptively
percipient
percipiently
perspicacious
perspicaciously
perspicacity
profundity
whip-smart
wisdom