| 100% | TEXT | 4 | Source material |
| 86% | CANON | 5 | Source material for fan fiction |
| 84% | HORTONHATCHESTHEEGG | 19 | Source material for Broadway's "Seussical" |
| 84% | ILIAD | 5 | Source material for "Troilus and Cressida" |
| 84% | CITE | 4 | Quote, as source material |
| 84% | AUDIO | 5 | Transcriber's source material |
| 84% | MANGA | 5 | Anime source material, often |
| 82% | CITE | 4 | Draw on, as source material |
| 78% | RAGAS | 5 | Hindu musician's source material for improvisation |
| 78% | PUREGOLD | 8 | Killer source material for a comedian, say |
| 76% | IRC | 3 | Source of some bash.org material |
| 75% | ORE | 3 | Metal source solid material |
| 74% | HEADCANON | 9 | Personal theory that isn't in the source material |
| 74% | ASHTREE | 7 | Source of material for a baseball bat |
| 74% | OSTRICH | 7 | Source of material for a feather duster |
| 73% | EWE | 3 | Sweater material source |
| 72% | ALPACA | 6 | Source of the robe material for Incan royalty |
| 67% | FUR | 3 | Material no longer sourced from kangaroos by Gucci |
| 66% | YAK | 3 | Traditional source of material for a sherpa's coat |
| 63% | SILK | 4 | Material sourced from a worm, usually harvested as a cocoon |
| 63% | OUTLANDER | 9 | Starz fantasy series that featured a cameo by Diana Gabaldon, author of the source material |
| 59% | TRUEBLOOD | 9 | HBO horror series that featured a cameo by Charlaine Harris, author of the source material: 2 wds. |
| 57% | HANDMAIDSTALE | 13 | With "The," Hulu drama that featured a cameo by Margaret Atwood, author of the source material: 2 wds. |
| 56% | CORAL | 5 | Sea-sourced jewelry material |
| 54% | BIOMASS | 7 | Renewable energy source which is developed from organic materials that come from plants and animals |
| 54% | IBID | 4 | "Sourced from the same material" abbr. |
| 49% | ORE | 3 | Mine material |
| 49% | CORAL | 5 | Reef material |
| 49% | NINON | 5 | Curtain material |
| 49% | DNA | 3 | Gene material |