The phrase "it arguably is" is correct and usable in written English.
You can use it to introduce an opinion that could reasonably be disputed. For example: "The rise in cost of living is an issue of concern for many workers, and it arguably is linked to increasing inequality."
It's an icy situation for the team, but one that with its athletes and new sleds, it arguably is best prepared to handle.
Although the register of the Symbolic comes to the fore only with Lacan's structuralist phase of the 1950s, it arguably is not without its precursors in his earlier texts.
While it arguably is – a fortune has been raised that may not otherwise have been – did the outcome justify the means?
The tax code does not count the time that Bob spent looking for investments as employment and his gain as taxable labor compensation, even though some of it arguably is.
This isn't an inferior version of the Steve Waugh side, or a less fat version of AB's Australians – even though, of course, it arguably is both of those things.
Flying by private plane will be regarded by some as dangerous, and it arguably is: UK figures for 2016 show that while there were no fatalities or serious injuries involving commercial air transport that year, there were 21 fatalities and 28 serious injuries involving private flying.
If it were a coffee shop, it would arguably be the best equipped in the city.
Additionally, while it can arguably be used by non-specialists, it requires some familiarisation and training27.
If its perceived potential can be realized, then it can arguably be regarded as a "disruptive" technology.
It can arguably be viewed as a new book!
For international justice as a whole, it will arguably be the most important moment since Nuremberg.
