All 3 Uses

taunt
in
Harry Potter (#2) and the Chamber of Secrets
(Edited)

But the long silence from Ron and Hermione had made Harry feel so cut off from the magical world that even taunting Dudley had lost its appeal — and now Ron and Hermione had forgotten his birthday.
p. 8.3

taunting = intentionally angering, challenging, or upsetting
Ever been taunted for your woeful wandwork?
p. 127.4

taunted = intentionally angered, challenged, or upset
"Hand it over, Malfoy," said Percy sternly.
"When I've had a look," said Malfoy, waving the diary tauntingly at Harry.
p. 239.2 *

tauntingly = in a manner that intentionally angers, challenges, or upsets someone

Definitions:

(1) (taunt)
to intentionally anger, challenge, or upset someone -- especially by mocking them or hurling insults

or (as a noun): an insult or other action intended to anger, challenge, or upset someone
(2) (meaning too rare to warrant focus)
More rarely, taunt can be used as a noun to refer to something said or done to mock, criticize, and/or tease.