| 100% | GRAPHITE | 8 | Gray form of carbon used in pencil "leads" |
| 77% | GRAPHITE | 8 | Blackish form of carbon used in pencils |
| 63% | GRAPHITE | 8 | Form of carbon found in pencils |
| 49% | CHARCOAL | 8 | Black form of carbon used as a fuel |
| 47% | AGATE | 5 | Form of quartz used in jewelry and playing marbles |
| 46% | DRYICE | 6 | Form of carbon dioxide that may go in a fog machine |
| 44% | AGATE | 5 | Impure form of quartz used in making pestles and mortars |
| 42% | DEAL | 4 | Trade in form of lead |
| 42% | ASPIRIN | 7 | White crystalline compound used in the form of tablets to relieve pain |
| 40% | DIAL | 4 | Word before "up" to mean a form of internet access used in the '90s |
| 40% | CURD | 4 | Substance used in cheese-making formed from the coagulation of milk by acid or rennet |
| 38% | BLACKLEAD | 9 | Form of carbon also known as graphite |
| 37% | HYDROGEN | 8 | In its liquid form it is the signature fuel of NASA space programs, using 10 million lbs. annually |
| 36% | LIRA | 4 | Form of currency in Turkey |
| 36% | AIME | 4 | Form of love in Paris? |
| 36% | AIME | 4 | Form of love in Lille? |
| 36% | OZONE | 5 | Form of oxygen in atmosphere |
| 36% | ELECTRICITY | 11 | Form of energy used to run appliances at home and can be produced in the ways described at 17a, 41a, 56a, and 47d |
| 36% | SUBSTITUTE | 10 | Use in place of another |
| 36% | ZEN | 3 | Form of Buddhism that uses koans |
| 36% | SAHIB | 5 | Form of address in British India |
| 36% | IDOLISM | 7 | Form of worship in 1552? So? |
| 36% | ARC | 3 | Type of lamp using carbon electrodes invented by Humphry Davy in the early 19th century |
| 35% | GRAPHITE | 8 | A shiny black substance that is used in pencils |
| 35% | SODANITER | 9 | Used in organic farming, synonym of nitratine |
| 35% | RHYTHMIC | 8 | Form of gymnastics that uses ribbons, balls |
| 35% | TEXTING | 7 | Form of communication using words and emojis |
| 35% | ALGEBRA | 7 | Form of mathematics using letters for unknowns |
| 35% | YOGA | 4 | Form of exercise that originated in India |
| 35% | CURRENCY | 8 | Form of payment in a certain country |