| Word | Definitions | Synonyms |
|---|---|---|
| antediluvian | (adjective) of or relating to the period before the biblical flood | Synonyms: antediluvial |
| (adjective) so extremely old as seeming to belong to an earlier period | Synonyms: antiquated, archaic | |
| avian | (adjective) pertaining to or characteristic of birds | - |
| diluvian | (adjective) of or connected with a deluge | Synonyms: diluvial |
| postdiluvian | (adjective) existing or occurring after Noah's flood | - |
| subclavian | (adjective) situated beneath the clavicle | - |