Twelvemonth

But last February, almost a twelvemonth back, she suddenly disappeared.

Source: wiktionary

Take the annals of the majority of hearths for a twelvemonth, and we should be amazed at the quantity of wretchedness that would be writ in them, if writ truly.

Source: wiktionary

For, owing to the large number of whale-cruisers; the disorderly way they were sprinkled over the entire watery circumference, many of them adventurously pushing their quest along solitary latitudes, so as seldom or never for a whole twelvemonth or more on a stretch, to encounter a single news-telling sail of any sort; […]

Source: wiktionary

She was ill very nigh a twelvemonth altogether; and I had to nurse her as best as I could, and clean the house, and cook, and make her gruel and everything, for we could not afford to pay a woman to help us.

Source: wiktionary