thereat /ˌðɛɹˈæt/ adverb2 •There; at that place.So she goeth around the hill compassing Time with me goes slow. - So there openeth a door, and thereat goes she in. — 1828 •At that event.The public has a right to know about the perpetration of acts of terrorism, or attempts thereat, and the media should not be penalised for providing such information. — 2008