| 1 | English | chronic | Of a problem, that continues over an extended... |
| 2 | English | chronical | Obsolete form of chronic; Misspelling of... |
| 3 | Old French | cronike | Alternative form of cronicle |
| 4 | Latin | chronicus | Of or pertaining to time; chronic |
| 5 | Ancient Greek | χρονικός | of or concerning time, temporal; chronological |
| 6 | Ancient Greek | -ικός | of or pertaining to, in the manner of; -ic |
| 7 | Ancient Greek | -κός | forms adjectives with the sense of 'of or... |
| 8 | Proto-Indo-European | -ḱos | -y, -ic |