Solutions His twelve is thirteen has 16 entries with similar clues
- slamWinning of twelve or thirteen tricks at bridge
- idesThirteenth or fifteenth day in the Roman calendar month
- teensThirteen-to-nineteen age group
- rondeauVerse form of ten or thirteen lines running on two rhymes
- moorishStyle of architecture common in Spain from the thirteenth to sixteenth centuries
- assissiTown in Umbria, home to two contemporary saints in the thirteenth century
- teenagerOne who is thirteen to nineteen
- dodecagonA plane figure with twelve straight sides and twelve angles
- tweenagerInformally a child approaching the age of thirteen
- marco-poloThirteenth-century Venetian traveller
- bar-mitzvahJewish religious initiation of a boy at the age of thirteen
- rugby-leagueThe thirteen-a-side game
- devils-dozenTerm for the number thirteen
- bakers-dozenThirteen
- middle-schoolTheir pupils are aged from nine to thirteen
- triskaidekaphobiaFear of the number thirteen