| PEAK | Most active |
| DIURNAL | Two-toed sloths are nocturnal, being most active at night. While three-toed sloths are ___ which means they are most active during the day |
| HIGHSEASON | When travel is most active |
| ETNA | Europe's most-active volcano |
| NIGHTS | Times when hamsters are most active |
| TACT | Most active in diplomacy (4) |
| BUSIEST | Like the most active bee? |
| SPRIEST | Most active 11, when last becomes first (7) |
| JACKALS | Wolfdoggy rascals most active at dawn and dusk |
| STROMB | Gastropod most active around river bank, primarily (6) |
| MTETNA | Abbreviated name for Europes tallest, most-active volcano (2,4) |
| MAESTROS | Wizards are most active on Sunday (8) |
| MOUNTETNA | Go up summits of Everest, Trivor, Nuptse and one of the most active volcanos in the world (5,4) |
| PREDAWNSHRIMP | Crustacean that's most active just before sunup? |
| ICELAND | Country which has Hekla as its most active volcano (7) |
| KILAUEA | The world's most active volcanic mass, located on the southeastern part of the island of Hawaii, Hawaii state, U.S. (7) |
| TWILIGHT | Time around dawn or dusk when crepuscular animals, birds and insects, including barn owls, foxes, hawk moths, nightjars, pipistrelles and tawnies, are most active (8) |
| NIGHTHAWK | Person who likes to be most active during the hours of darkness (9) |
| ATNIGHT | When Santa and the tooth fairy are most active |
| NIMBLEST | Most active local objector finally failing in case |
