| Rating | Solver | Clue |
|---|---|---|
| PRIMAL | Primitive | |
| UNCIVILISED | Primitive | |
| PRIMEVAL | Primitive | |
| CRUDE | Primitive | |
| TINAMOUS | Primitive bird | |
| NEANDERTHAL | Primitive human | |
| MOSS | Primitive plant | |
| CYCAD | Primitive plant | |
| PRISTINATE | Pristine; primitive. | |
| ARTEFACT | Primitive art form | |
| ARTIFACT | Primitive art form | |
| AMOEBA | Primitive life form | |
| STURGEON | Primitive bony fish | |
| BARBARIC | Primitive or brutal | |
| ARCHAEOPTERYX | Extinct primitive bird | |
| ALGAE | Primitive water plants | |
| ORIGINARY | Primitive; primary; original. | |
| PERIENTERON | The primitive perivisceral cavity. | |
| TRIBESMAN | Brainstem damaged by primitive fellow | |
| AXEHEADS | Sack principals making primitive choppers | |
| ETYMON | An original form; primitive word; root. | |
| THROWBACK | Reversion to an earlier, more primitive type | |
| GERMOGEN | The primitive cell in certain embryonic forms. | |
| PRIMITIAL | Being of the first production; primitive; original. | |
| ARCHIPTERYGIUM | The primitive form of fin, like that of Ceratodus. | |