Middle English word herth comes from Latin crescendum, Proto-Balto-Slavic *krei-, Proto-Baltic *krei-, Proto-Indo-European *kerh₂-, and later Proto-Germanic *herþaz (Hearth, fireplace.)
| Dictionary entry | Language | Definition |
|---|---|---|
| crescendum | Latin (lat) | |
| *krei- | Proto-Balto-Slavic (ine-bsl-pro) | |
| *krei- | Proto-Baltic (bat-pro) | |
| *kerh₂- | Proto-Indo-European (ine-pro) | |
| *kérh₃tos | Proto-Indo-European (ine-pro) | |
| *kr- | Proto-Indo-European (ine-pro) | |
| sincerus | Latin (lat) | Clean, pure, sound.. Genuine, sincere.. Real, natural.. Uninjured, whole. |
| *herþaz | Proto-Germanic (gem-pro) | Hearth, fireplace. |
| heorþ | Old English (ang) | Hearth. |
| herth | Middle English (enm) |