The phrase "at their outset" is correct and usable in written English.
It can be used to refer to the beginning or initial stage of something, such as a process, event, or discussion.
Example: "At their outset, the negotiations seemed promising, but they quickly became contentious."
Alternatives: "at the beginning" or "in the initial stages".
At their outset, the Mary Chain were scurvyish nihilists who fused Phil Spector pop with Suicide.
At their outset, these markets traded futures based exclusively on agricultural commodities such as corn and wheat.
PARIS — Many auto executives were not that enthusiastic about battery-powered cars at their outset, and now that sales of electric vehicles made by Tesla and Renault have been disappointing, some carmakers are playing down the technology.
The world's climate negotiations in Cancun were faced with deadlock at their outset yesterday after Japan insisted it would not agree to renewing the Kyoto Protocol, the current treaty under which rich countries are cutting their emissions of greenhouse gases.
In tension with this reality is the fact that revolution in science is often indebted to prolonged exploration of basic research projects, which may at their outset fail to meet Representative Smith's criteria.
A BBC review said: "The kids - which Foals were at their outset - have grown up splendidly.
C1 A.M.A. Calls for Drug Database The American Medical Association adopted a resolution that urges the federal government to create a database in which all clinical drug trials performed in this country would be registered at their outsets.
The survivors of this expedition travelled from their outset at York Factory down to their return to it again, by land and water, 5550 miles.
Indeed, the biggest takeaway for readers, Kirkpatrick adds, is that women do their research at the outset of their job hunting process.
The writings of several Greek philosophers explicitly identify Homer as the creator of poetry, and other Greek figures such as Herodotus and Thucydides established their creator roles at the outset of their texts.
At the outset their differences are palpable.
