The phrase "already ambiguous" is correct and usable in written English.
It can be used to describe a situation, statement, or concept that is unclear or open to multiple interpretations at a given point in time.
Example: "The instructions provided were already ambiguous, leading to confusion among the team members."
Alternatives: "previously unclear" or "initially vague".
This explains why the ambiguity between databases for identifiers that are already ambiguous in one of the databases can be much higher than the ambiguity within databases.
The ambiguity between databases that could be attributed to identifiers that are already ambiguous within one or both of the databases, varied between 2.0 % (DrugBank and NPC) and 39.4 % (DrugBank and PubChem), but generally was considerably lower than the overall ambiguity between databases.
For instance, DrugBank and ChemSpider-V, which are both considered highly curated databases [20, 38], show that 45.2 % of the shared identifiers are ambiguous (while only 6.7%% of the ambiguity between these databases could be attributed to identifiers that were already ambiguous in the separate databases).
Mr. Gourmet's character is "already ambiguous, difficult to understand," said Luc Dardenne.
Taken together, critics say, the changes could further muddle what they say are already ambiguous espionage laws and perhaps — at worst — presage a return of the Soviet-era practice of prosecuting government critics as traitors.
When the Bancrofts were in control of discussions, Dow Jones' already ambiguous fate seemed even more muddled.
Even in these cases, however, research suggests that strong norms of territorial integrity have ensured that these land grabs remain limited, confined to "gray areas" where sovereignty is already contested and ambiguous.
I wanted to make sure that the video wasn't too reliant on the title of the track, which is already a pretty ambiguous word, and when Kheaven sent me the treatment for the video I loved it.
Four of these items were deleted following feedback from the panel because they were viewed as ambiguous or already covered by a similar item.
But most of those moving to the exurban townships now already have white collars, and ambiguous voting habits.
Whether this is to be taken as a triumph or a tragedy is ambiguous, and has already occasioned interesting debate.
