at
/ət/
preposition
—used as a function word to indicate presence or occurrence in, on, or near
—used as a function word to indicate the goal of an indicated or implied action or motion
—used as a function word to indicate that with which one is occupied or employed
noun
a monetary subunit of the kip
verb
to respond to, challenge, or disparage the claim or opinion of (someone) —usually used in the phrase don't @ me