preservative
/prɪˈzɜːvətɪv/ adjective C2- Tending to preserve. · The curators took preservative actions to maintain the ancient collection.
From the library
Without thinking highly either of men or of matrimony, marriage had always been her object: it was the only honourable provision for well-educated young women of small fortune, and, however uncertain of giving happiness, must be their pleasantest preservative from want.
This preservative she had now obtained; and at the age of twenty-seven, without having ever been handsome, she felt all the good luck of it.
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