"insatiable interest" is correct and usable in written English.
It can be used to describe a strong and unending desire or curiosity about something. Example: She had an insatiable interest in ancient history and spent every spare moment researching and learning about different civilizations.
The public had an insatiable interest in new works.
Yet she seems to have been blessed with an insatiable interest in all things sculptural.
His pleasant nature was matched by an insatiable interest in business technology.
A voracious reader and lover of the New York Times, he had an insatiable interest in US and European history.
Shakespeare an insatiable interest in the social fabric, telling stories that have an impact on all levels of society.
With an insatiable interest in countries, Keyserling also interpreted the soul of South America and, less perceptively, analyzed the whole spectrum of European nations.
They were motivated by a strong idea of bourgeois civil liberties, and power to them!' Sontag's insatiable interests and infectious enthusiasms seem to know no frontier.
Recalling the listing of Netscape in 1995, which kicked off the dotcom bubble, its reporters go on to say: "With nearly insatiable investor interest, it could put a price tag of $25 billion on a company that didn't exist a decade ago".
With my insatiable curiosity and interest in geopolitics I became fascinated with them.
As American writer Edith Wharton said, (1862-1937) "In spite of illness, in spite even of the archenemy sorrow, one can remain alive long past the usual date of disintegration if one is unafraid of change, insatiable in intellectual curiosity, interested in big things, and happy in small ways".
EATON--Arthur, Jr., died Sunday, February 9 in Berkeley, CA. A psychologist and social worker, he was a modern-day Renaissance man with innumerable interests and an insatiable curiosity and zest for life.
