twelvemonth means A year. Lexicurio rates it Rare gem — a strength score of 82 out of 100.
twelvemonth is pronounced /ˈtwɛlvmʌnθ/.
Etymology
From Middle English twelmonth, twelfmonthe, twelfmonþe, from Old English twelfmōnþ, twelfmōnaþ, equivalent to twelve + month.
noun
- A year.“But last February, almost a twelvemonth back, she suddenly disappeared.”