| 100% | LULL | 4 | Period that's not bustling with activity |
| 48% | ROUGHPATCH | 10 | Time period that's not easy |
| 45% | NONO | 4 | Activity that's not allowed: Hyph. |
| 44% | ATOY | 4 | "That's not ___!" ("Don't play with that!") (2 wds.) |
| 42% | HUM | 3 | ___ with activity (be bustling) |
| 42% | SPACEAGE | 8 | Period that started with Sputnik |
| 41% | ATOMICAGE | 9 | Period that began with a bang? |
| 41% | OTS | 3 | Periods that may end with FGs |
| 40% | SALTED | 6 | Caramel with seasoning that's not pepper |
| 39% | PAXROMANA | 9 | Period that ended with the death of Marcus Aurelius |
| 39% | APR | 3 | Period that begins with a day of pranks: Abbr. |
| 38% | SPACEAGE | 8 | Time period that began with Sputnik in 1957 |
| 38% | RECESS | 6 | Period that often begins with frenzied children pouring onto the playground |
| 37% | ALBUMERA | 8 | Pop music period that emphasized LPs, not just singles |
| 37% | DINOSAURAGE | 11 | Prehistoric period that ended with the Chicxulub asteroid impact |
| 37% | CAMPOUT | 7 | Activity with a tent and s'mores |
| 37% | YOU | 3 | With 67-Across, "That's not true!" |
| 37% | OH | 2 | With 7-Across, "That's not good!" |
| 37% | NEWERA | 6 | Period that's "ushered in" |
| 37% | ATMFEE | 6 | Cost of a bank transaction that's not with one's own bank |
| 37% | SEA | 3 | With 48-Across, underwater creature that's certainly not a 48-Across |
| 37% | BREW | 4 | Cold ___ coffee (java that's not made with hot water) |
| 36% | LIE | 3 | That's not true |
| 36% | PARTLY | 6 | That's not all |
| 36% | DRYSPELL | 8 | Period with no rainfall, not as drastic as drought |
| 36% | FUN | 3 | With 59-Across, race that's not very competitive |
| 36% | ERAS | 4 | Periods that might be associated with heads of state |
| 36% | ATOY | 4 | "That is not ___!" ("Don't play with that!") |
| 36% | DAYCAMP | 7 | Kids' summer activity that contrasts with sleepaway |
| 36% | FUROR | 5 | Outbreak of activity that rhymes with "juror" |