| 100% | TRISECT | 7 | Divide into three parts |
| 100% | TRISECTED | 9 | Divided into three parts |
| 91% | GAUL | 4 | "All ___ is divided into three parts" |
| 90% | GAUL | 4 | Land divided into three parts, per Caesar |
| 86% | TRISECT | 7 | To divide into three equal parts |
| 83% | BRANDED | 7 | Labeled ... or, divided into three parts, what surrounds the answers to starred clues |
| 79% | GRANDPA | 7 | Pop's pop ... or, divided into three parts, what the answers to starred clues have in common |
| 77% | ABANDON | 7 | Leave high and dry ... or, when divided into three parts, what the answers to starred clues are encompassed by |
| 72% | TRISECTING | 10 | Cutting into three parts |
| 67% | INDISCRETE | 10 | Not divided into parts |
| 66% | SSNS | 4 | Identifiers broken into three parts |
| 66% | SEVER | 5 | Divide into parts |
| 66% | SEPARATE | 8 | Divide into parts |
| 64% | HALVE | 5 | Divide into two equal parts |
| 64% | QUARTERED | 9 | Divided into four equal parts |
| 63% | HENRYVI | 7 | King's story Shakespeare splits into three parts |
| 63% | HALVE | 5 | Divide into two equal parts, say |
| 61% | TRISECT | 7 | Cut into three equal parts |
| 58% | STPATRICK | 9 | March figure ... or, when split into three parts, a title for this puzzle |
| 57% | PRISM | 5 | Light refractor, or, when broken into three parts, a hint to the theme answers |
| 56% | SPLITTER | 8 | Electronic device, divides something into parts |
| 54% | IRELAND | 7 | Emerald isle divided into two parts politically |
| 52% | STOP | 4 | "Freeze!" ... or, when broken into three parts, how the answer for each of the six starred clues goes |
| 51% | PARSE | 5 | Divide a sentence into grammatical parts |
| 49% | FORK | 4 | Point where the road divides into two parts |
| 49% | THIRDS | 6 | Photography rule dividing image into three |
| 48% | HENRYVI | 7 | Play in three parts |
| 48% | THIRD | 5 | One of three parts |
| 47% | DICED | 5 | Sliced and ___ (divided into many small parts) |
| 47% | TRIMESTER | 9 | Any one of the three terms into which the US academic year is divided |