| Solution | Length | |
|---|---|---|
| 3 letters | ||
| oat | 3 | |
| ion | 3 | |
| 4 letters | ||
| muon | 4 | |
| atom | 4 | |
| easy | 4 | |
| pure | 4 | |
| 5 letters | ||
| meson | 5 | |
| prime | 5 | |
| basic | 5 | |
| spare | 5 | |
| stark | 5 | |
| COMPO | 5 | |
| first | 5 | |
| 6 letters | ||
| baryon | 6 | |
| severe | 6 | |
| primal | 6 | |
| single | 6 | |
| simple | 6 | |
| staple | 6 | |
| abbott | 6 | |
| 7 letters | ||
| radical | 7 | |
| neutron | 7 | |
| seminal | 7 | |
| uniform | 7 | |
| primary | 7 | |
| natural | 7 | |
| 8 letters | ||
| electron | 8 | |
| neutrino | 8 | |
| prenatal | 8 | |
| primeval | 8 | |
| material | 8 | |
| pregnant | 8 | |
| pristine | 8 | |
| ultimate | 8 | |
| inchoate | 8 | |
| physical | 8 | |
| 9 letters | ||
| unadorned | 9 | |
| primitive | 9 | |
| 10 letters | ||
| rudimental | 10 | |
| UNDERLYING | 10 | |
| elementary | 10 | |
| simon-pure | 10 | |
| primordial | 10 | |
| 11 letters | ||
| SUBSTANTIAL | 11 | |
| UNCLUTTERED | 11 | |
| preparatory | 11 | |
| procreative | 11 | |
| fundamental | 11 | |
| CONSTITUENT | 11 | |
| rudimentary | 11 | |
| SUBSTANTIVE | 11 | |
| 16 letters | ||
| undifferentiated | 16 | |