| Sixth wife of Henry VIII | 24 |
| Sixth word in the Declaration of Independence | 45 |
| Sixth word in the ladder | 24 |
| Sixth word in the Pledge of Allegiance | 38 |
| Sixth word of "A Tale of Two Cities" | 46 |
| Sixth word of "Richard III" | 37 |
| Sixth word of “Moby-Dick” | 33 |
| Sixth word of the Gettysburg Address | 36 |
| Sixth zodiac sign | 17 |
| Sixth __ | 8 |
| Sixth ___ | 9 |
| Sixth _____ | 11 |
| Sixth, in Italy | 15 |
| Sixth, in Siena | 15 |
| Sixth, in Turin | 15 |
| Sixth-anniversary material | 26 |
| Sixth-brightest star | 20 |
| Sixth-brightest star in a constellation | 39 |
| Sixth-brightest star in the sky | 31 |
| Sixth-century B.C. storyteller | 30 |
| Sixth-century Chinese dynasty | 29 |
| Sixth-century date | 18 |
| Sixth-century death year of Clovis I | 36 |
| Sixth-century Great Britain settler | 35 |
| Sixth-century midpoint | 22 |
| Sixth-century pope | 18 |
| Sixth-century year | 18 |
| Sixth-century year when the Armenian calendar begins | 52 |
| Sixth-century year when the Kingdom of East Anglia was formed | 61 |
| Sixth-day Christmas gift | 24 |
| Sixth-day creation | 18 |
| Sixth-day-of-Christmas gift | 27 |
| Sixth-grader of a 1990s cartoon series | 38 |
| Sixth-grader's age, maybe | 29 |
| Sixth-grader, usually | 21 |
| Sixth-graders, usually | 22 |
| Sixth-largest continent | 23 |
| Sixth-largest in a chain, after Molokai | 39 |
| Sixth-month heroes | 18 |
| Sixth-sense field: Abbr. | 24 |
| Sixth-sense initials | 20 |
| Sixth-sense letters | 19 |
| Sixth-sense phenomenon | 22 |
| Sixth: It. | 10 |
| Sixths of an inch, to a printer | 31 |
| Sixties apparel | 15 |
| Sixties castoff | 15 |
| Sixties coif | 12 |
| Sixties coll. group | 19 |
| Sixties dance | 13 |
| Sixties decal, often | 20 |
| Sixties drug | 12 |
| Sixties drug, abbr. | 19 |
| Sixties drug, for short | 23 |
| Sixties folk legend | 19 |
| Sixties grp. | 12 |
| Sixties hairstyle | 17 |
| Sixties hallucinogen | 20 |
| Sixties hallucinogen, abbr. | 27 |
| Sixties hallucinogen, for short | 31 |
| Sixties halucenogen, abbr. | 26 |
| Sixties halucinogen | 19 |
| Sixties halucinogen, for short | 30 |
| Sixties idol | 12 |
| Sixties org. on campuses | 24 |
| Sixties pol with eleven kids | 28 |
| Sixties slogan | 14 |
| Sixties' student org. | 25 |
| Sixtieth day of the year, periodically | 38 |
| Sixtieth golf lie | 17 |
| Sixtieth of a min. | 18 |
| Sixtieth of a talent | 20 |
| Sixtus IV's ___ Chapel | 26 |
| Sixty | 5 |
| Sixty grains | 12 |
| Sixty make a min. | 17 |
| Sixty minutes | 13 |
| Sixty minutes in Milano | 23 |
| Sixty minutes past 12 | 21 |
| Sixty minutes, in Milano | 24 |
| Sixty minutes, in Siena | 23 |
| Sixty minutes, in Spain | 23 |
| Sixty seconds, in Siena | 23 |
| Sixty secs. | 11 |
| Sixty years before Hastings | 27 |
| Sixty-five for retirement, often | 32 |
| Sixty-five, for many | 20 |
| Sixty-four of these equal about 40 miles | 40 |
| Sixty-four, in chess | 20 |
| Sixty-fourth of a qt. | 21 |
| Sixty-min. periods | 18 |
| SIXTY-SIX | 9 |
| Sixty-thousandths of a min. | 27 |
| Sixty-two, to Caesar | 20 |
| Sixty-___ (engages in a sex act) | 32 |
| Sixx of Motley Crue | 19 |
| Sixx: A.M. "___ Ballet" | 33 |
| Six___ None the Richer | 22 |
| Sizable | 7 |
| Sizable accounts? | 17 |