adv. 1. At that place; there. [ 1913 Webster ]

Wide is the gate, and broad is the way, that leadeth to destruction, and many there be which go in thereat. Matt. vii. 13. [ 1913 Webster ]

2. At that occurrence or event; on that account. [ 1913 Webster ]

Every error is a stain to the beauty of nature; for which cause it blusheth thereat. Hooker. [ 1913 Webster ]