The phrase "arguably missing" is correct and usable in written English.
It can be used to suggest that something may be absent or lacking, but this absence is open to interpretation or debate.
Example: "The report is comprehensive, but it is arguably missing key data that could enhance its credibility."
Alternatives: "potentially absent" or "possibly lacking".
The first element is arguably missing.
Nor was there anything particularly complex about the case, from the point of view of public understanding ("Blonde who's likely to be a bombshell," screamed Bristol's Western Daily Press, arguably missing the point).
The audience is there, so is the content, but the robustness of interaction needed to keep that story going is arguably missing.
Still, the museum arguably missed an opportunity, in 1991, to investigate the sources of its von Luschan Collection.
In hindsight, the fund arguably missed two other internal criteria as well, the report concludes: ascertaining that Greece had "good prospects of regaining access to private capital markets" and ensuring that it had a "reasonably strong prospect of the programs' success taking into account institutional and political capacity to deliver adjustment".
However, while Goodman's index helpfully structures comparison of how national policies are conditioning entry, permanent residence and naturalization on language and civic knowledge, it arguably misses key developments in civic integration regimes adopted in Scandinavia and other countries, some of them implemented through family reunification policy.
This is, arguably, a missed opportunity to providing a truly holistic understanding of childhood poverty by shedding light on themes that are crucial to children's wellbeing but are not well researched in India at present.
The strawberry stem arguably is the missing letter, but this sure reads like Googe to me.
Within this framework, biophilic design arguably represents the missing element in sustainable design, which is still tied to an idea of nature understood more as an ethical value, than as a biologically given condition.
As the company revive Mayerling for what would have been MacMillan's 80th birthday, there's another sadness in the fact that he's missing an arguably even finer interpretation of his brilliantly damaged creation, mad Prince Rudolf.
"I'd say if you take into consideration away from home against a team that are probably going to finish in the play-offs at least, in conditions like they were, with the number of people we've got missing, then arguably probably yes [that was the best performance so far of my reign].
