The phrase "almost inappropriate" is correct and usable in written English.
It can be used to describe something that is close to being unsuitable or unacceptable, but not quite crossing the line.
Example: "Her comment was almost inappropriate, but it was delivered in a light-hearted manner that made everyone laugh."
Alternatives: "nearly unsuitable" or "borderline inappropriate".
In more intimate settings, he projects an almost inappropriate joyousness.
The actor added that it felt "almost inappropriate" that Ledger could not be with them: "His portrayal is really iconic.
With Nathan Redmond prominent, they cut through Hull with the almost inappropriate ruthlessness of a power tool slicing a soufflé.
But it would have felt almost inappropriate had they advanced to within 90 minutes of the season decider.
But there is a kind of poet for whom involvement in the tackier, saltier elements of everyday life and popular culture seems not only unlikely, but almost inappropriate.
Mr. Affleck and Ms. Graham have an interesting, almost inappropriate brother-sister chemistry (another interesting possibility the film raises but declines to pursue), but they spend most of the movie sitting around waiting for instructions.
These figures, drawn from the responses of more than half the local authorities in the UK, also show that one in five complaints against school staff - almost 500 - were allegations about inappropriate sexual behaviour.
The crowd are whipping themselves up into an almost rather inappropriate frenzy!
It was an almost comically inappropriate handle — there was nothing in the least scintillating about the young Sparky, who was small, shy, geeky — and also a fateful one, linking him to what from a very early age he determined to be his life work: to produce a syndicated daily comic strip.
In a guidance note on opinion it says it is "almost always inappropriate to offer opinion" if you are an ABC journalist and there is "particular sensitivity for ABC staff working in news and current affairs, where there is the need to demonstrate impartiality and independence on all newsworthy and topical issues".
Political appointees at HHS suggested other names that Keusch found almost wholly inappropriate for the task.
