| 100% | GRANDMAL | 8 | Form of epilepsy characterised by loss of consciousness and violent convulsions |
| 40% | EPILEPSY | 8 | Medical disorder characterised by the periodic sudden loss of consciousness |
| 40% | CATALEPSY | 9 | Medical condition characterised by muscular rigidity and a loss of sensation |
| 34% | TWIST | 5 | 1960s dance characterised by gyrations of the arms and hips |
| 32% | ION | 3 | Electrically charged atom formed by gain or loss of electrons |
| 32% | ARTNOUVEAU | 10 | Style of architecture of the 1890s characterised by stylised natural forms |
| 31% | OPAL | 4 | "Steven Universe" character formed by the fusion of Amethyst and Pearl |
| 31% | DORIC | 5 | Classical order of architecture characterised by a column with no base and a heavy fluted shaft |
| 31% | OFGEM | 5 | Non-ministerial government department formed by the merger of OFFER and Ofgas |
| 30% | BLACKOUT | 8 | Loss of consciousness |
| 30% | WESER | 5 | River formed by the junction of the Fulda and Werra |
| 30% | HEART | 5 | "Elastic ___," hit song written and performed by Sia for her album "1000 Forms of Fear" |
| 29% | DEMOCRACY | 9 | Form of government championed by Jefferson |
| 29% | FAINTING | 8 | Temporary loss of consciousness |
| 29% | UNISON | 6 | Trade union formed in 1993 by the amalgamation of COHSE, NALGO, and NUPE |
| 29% | GIRONDE | 7 | Estuary in France formed by the confluence of the Rivers Dordogne and Garonne |
| 28% | ION | 3 | Electrically charged atom formed by the loss or gain of one or more electrons |
| 28% | YAZOO | 5 | River in Mississippi, US, formed by the confluence of the Tallahatchie and Yalobusha Rivers |
| 28% | SHATTALARAB | 11 | River in SE Iraq formed by the confluence of the Tigris and Euphrates Rivers |
| 28% | DOUBLE | 6 | With 52-Down, betrayal, and what's formed by each pair of the trigrams |
| 28% | DOUBLES | 7 | Form of tennis played by two each side |
| 28% | WOODROW | 7 | Given name of actor Harrelson (or what's formed by 29-, 32- and 34-Across) |
| 27% | ANALGESIA | 9 | Insensibility to pain without loss of consciousness |
| 27% | LAUNDRYLIST | 11 | Extensive enumeration ... or what's formed by the ends of 17-, 23-, 34- and 48-Across |
| 27% | BOOGIE | 6 | Form of rock and roll |
| 27% | CANYOU | 6 | & 10D First of the Palliser novels by Anthony Trollope published in serial form in 1864 and 1865 |
| 26% | PIDGIN | 6 | Simple form of English used by non-native speakers |
| 26% | GREISEN | 7 | Light-coloured rock containing quartz and mica formed from the alteration of granite by hot gases from magma |
| 26% | INDEMNITY | 9 | Form of insurance against loss or damages |