The phrase "already abundantly" is correct and usable in written English.
It can be used to emphasize that something is present in large quantities or to indicate that a situation has been fulfilled to a great extent prior to a certain point in time.
Example: "The evidence has already abundantly shown that the new policy is effective in improving productivity."
Alternatives: "already plentiful" or "already in excess".
The number of dead hostages and rebels is still being tallied, but it is already abundantly clear that the rebels and government forces once again disgraced themselves.
But former government officials say Trump would not need to have privately directed Delrahim how to behave when the president's feelings on the deal are already abundantly clear.
In any ordinary season, such form would have seen them lose serious ground on all of their rivals, but it was already abundantly clear that this was no ordinary campaign.
The contrast with the Stephen Lawrence inquiry could hardly be starker: what difference could he possibly have made at the Diana inquest when it was already abundantly clear, before £7m was spent, that the pair had simply died in a tragic accident?
(In case that wasn't already abundantly clear).
As for context, in case it wasn't already abundantly clear, Angry Birds is popular.
By then, the extent of the country's economic duress had already become abundantly clear.
Of course, this was just for himself and "any lucky ladies", he'd already made abundantly clear.
This first installment reads like the work of a man who has already written abundantly about himself.
Rather than sell, say, digital cameras, you might sell a specialty tripod or other accessories that aren't already sold abundantly online.
And of course, the Conservative government has already made abundantly clear its intention to enact a single, comprehensive law – the so-called "snooper's charter" – which many fear would unleash a tidal wave of surveillance at political and executive discretion.
