| 100% | BASICRATE | 9 | What surcharges are added to |
| 70% | IVE | 3 | What may be added to impress? |
| 69% | PASTA | 5 | What may be added to bolognese sauce |
| 68% | CALORIES | 8 | What's been added to the starred answers |
| 64% | QANDU | 5 | What can be added to 39 and 40 Across to form new words |
| 60% | STEM | 4 | What an inflectional ending is added to |
| 54% | BRANCHES | 8 | What twigs are attached to |
| 54% | COB | 3 | What kernels are attached to |
| 54% | HOS | 3 | Sounds from Santa (and what's been added to 17, 39, and 63 Across) |
| 54% | EYELASHES | 9 | What mascara is applied to |
| 53% | IVE | 3 | It may be added to impress |
| 53% | IVE | 3 | It may be added to excess |
| 53% | SINTAX | 6 | It may be added to alcohol |
| 53% | SODACRACKERS | 12 | They may be added to soup |
| 53% | KILN | 4 | Lime might be added to one |
| 53% | BARTAB | 6 | Painkillers might be added to it |
| 53% | INSULT | 6 | It may be added to injury |
| 52% | RIDER | 5 | It may be added to the bill |
| 52% | BARTAB | 6 | A round may be added to it |
| 52% | DECAF | 5 | 1-Across may be added to it |
| 52% | BARTAB | 6 | A screwdriver might be added to it |
| 52% | BARTAB | 6 | A sidecar may be added to it |
| 52% | CHEX | 4 | It may be added to the mix |
| 52% | OIL | 3 | 4-Down may be added to it |
| 52% | AMENDMENTS | 10 | *They may be added to some bills |
| 52% | SHORT | 5 | "This five-letter word becomes shorter when you add two letters to it. What is it?" |
| 51% | OED | 3 | "Mansplain" was added to it in Jan. 2018 |
| 51% | OED | 3 | "Webspace" was added to it in Jun. 2017 |
| 51% | OED | 3 | “Awesomesauce” was added to it in 2020: Abbr. |
| 51% | LIMES | 5 | Fruits whose juice can be added to pho |