| 100% | CHAMBERS | 8 | The heart has 4 of these |
| 60% | STAIRCASE | 9 | This puzzle has a secret one, starting with the third letter of 4-Down |
| 54% | CHAMBERS | 8 | Your heart has four of these to pump blood |
| 54% | VALVES | 6 | Human hearts have four of these, each with flaps |
| 54% | ORGAN | 5 | The heart and liver are both examples of this |
| 53% | ARTICHOKE | 9 | Eat the hearts of this thistle-shaped vegetable |
| 52% | ARTICLE | 7 | What is found at the heart of this clue |
| 52% | AMENDMENTS | 10 | The U.S. Constitution has of 27 these |
| 50% | EONS | 4 | The Earth has existed for four of these time periods |
| 50% | LEANING | 7 | The Italian city of Pisa has this type of tower |
| 50% | CONTINENT | 9 | The world has 7 expanses of land with this name |
| 49% | AFRO | 4 | The world's largest one has a circumference of 4' 4" |
| 49% | CAROLINA | 8 | The US has a North and South version of this state |
| 49% | CONDO | 5 | If you own one of these, you'll have membership in the homeowners association |
| 48% | WEALTH | 6 | Living in the lap of luxury means one has this |
| 48% | OPLACETOGO | 10 | What some of the letters in this puzzle seemingly have |
| 48% | TOENAIL | 7 | Half of the digits have this |
| 48% | TINMAN | 6 | He didn't have a heart in The Wizard of Oz |
| 47% | COOK | 4 | Having too many of this may spoil the broth |
| 47% | ROGER | 5 | ___ Federer, who has won the Laureus sportsman of the year 4 times |
| 46% | LATERAL | 7 | The December 9, 2018 "Miracle in Miami" had the Dolphins making this type of pass |
| 46% | TAU | 3 | In the system of Greek numerals this letter has a value of 300 |
| 46% | PRIMETIMEEMMY | 13 | What each of the programs in this puzzle has won at least once |
| 46% | BFF | 3 | Person who might have the other half of a heart necklace, in brief |
| 46% | EYE | 3 | Either of the circled letters in 4-Across, for this puzzle's face |
| 46% | ISINAGLASSJARONMYDESK | 21 | "I have the heart of a small boy. It ___": Stephen King |
| 46% | SPOKES | 6 | The Buddhist wheel of life has eight of these |
| 46% | SITES | 5 | The 4-Down has millions of them |
| 46% | PAYLOAD | 7 | The Antonov An-225 Mriya has a limit of just over 550,000 pounds for this |
| 45% | IJUSTMETYOU | 11 | "Hey, ___, and this is crazy ..." (start of the chorus in 40-Across): 4 wds. |