| fifth | (adjective) coming next after the fourth and just before the sixth in position | Synonyms: 5th |
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| (noun) the musical interval between one note and another five notes away from it | - |
| (noun) one part in five equal parts | Synonyms: fifth part, one-fifth, twenty percent |
| (noun) a quantity of liquor equal to one fifth of a United States gallon | - |
| (noun) position five in a countable series of things | - |
| twelfth | (adjective) coming next after the eleventh and just before the thirteenth in position | Synonyms: 12th |
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| (noun) one part in twelve equal parts | Synonyms: duodecimal, one-twelfth, twelfth part |
| (noun) position 12 in a countable series of things | - |