| 100% | ISOTOPE | 7 | 2 atoms of 1 element with different neutron count |
| 42% | ISOTONE | 7 | Either of two species of atoms with the same number of neutrons and a different number of protons |
| 29% | ION | 3 | Atom with unequal number of protons and electrons |
| 29% | NEWYEAR | 7 | With 1-Down, phrase of resolution |
| 28% | ICEAGES | 7 | Periods of time with accentuated cold elements |
| 28% | ASSORTED | 8 | With many different varieties, like a box of chocolates |
| 28% | CLEAN | 5 | With 1-Down, symbol of a fresh start |
| 27% | UAE | 3 | Count. with a Minister of State for Happiness and Wellbeing |
| 27% | DOT | 3 | With 2-Down, end of the Gettysburg address? |
| 27% | ALL | 3 | With 1-Across, descriptor of some college-football stars |
| 27% | GIMLETS | 7 | Cocktails of 2 parts gin and 1 part lime juice |
| 26% | IRISH | 5 | With 1-Down, dish of mutton, potatoes, and onions |
| 26% | OMELETBAR | 9 | Breakfast buffet station with lots of eggs: 2 wds. |
| 26% | SALADBAR | 8 | Type of buffet with many raw veggies: 2 wds. |
| 26% | ISOTOPES | 8 | Same number of protons, different neutrons |
| 25% | TODO | 4 | Kind of a list with tasks: 2 wds. |
| 25% | SCARY | 5 | With 1-Down, bandmate of Sporty, Baby, Ginger, and Posh |
| 25% | CARDTRICK | 9 | Magician's sleight of hand with a deck: 2 wds. |
| 25% | TUNAROLL | 8 | Type of sushi with raw fish and spicy mayonnaise: 2 wds. |
| 25% | EPICNOVEL | 9 | Work of fiction with many characters and story lines: 2 wds. |
| 25% | LIRPA | 5 | With 1-Across, a normal answer for a totally normal day of the year |
| 25% | HUMAN | 5 | With 2-Down, it has roughly tripled in size since the time of australopithecines |
| 24% | CHAIRYOGA | 9 | Low-impact exercise done with a piece of furniture: 2 wds. |
| 24% | TAHOE | 5 | Resort lake with a depth of 1,645 feet |
| 24% | MILE | 4 | 1/26.2 of a marathon |
| 24% | XBOXLIVE | 8 | Service that allows you to play Gears of War with someone in a different country |
| 24% | BUBBLETEA | 9 | Beverage with "pearls" at the bottom of the cup: 2 wds. |
| 24% | CHESS | 5 | Board game with over 1,000 different opening moves |
| 23% | MARS | 4 | Planet named after the Roman god of war with 2 known moons, Phobos and Deimos |
| 23% | ORA | 3 | "That comes with your choice of fries ___ salad": 2 wds. |