The phrase "adequate even if" is correct and usable in written English.
It can be used to indicate that something is sufficient or acceptable under certain conditions or circumstances.
Example: "The solution may be adequate even if it doesn't meet all the original specifications."
Alternatives: "sufficient regardless of" or "acceptable even when".
And yet that response — "we didn't do anything, we don't deserve this" — was not adequate, even if understandable.
With the ample torque available at lower engine speeds, the transmission ratios of the five-speed manual are more than adequate, even if you accelerate hard in a too-high gear.
The old promise of homogenous European nation-states – that if you integrate, you'll enjoy the privilege of a society based on the concept of individual rights – no longer seems adequate, even if it can be fully redeemed.
For the purposes of tracking, it is adequate even if we approximate the blob with an enclosing bounding box.
The sensitivity of the Finnish screening programme for colorectal cancer at the first round was adequate even if relatively low.
Even without those advances, researchers should continue to identify instances in which patients' self-reports can be used to guide adaptation by RL systems, since reliable behavioral reports that are correlated in predictable ways with the outcome of interest may be adequate, even if those self-reports are biased relative to the actual behavior, e.g., over-reporting of medication taking.
There is increasing evidence that adolescents, particularly pubertal or post-pubertal teens, may have trouble falling asleep early enough to get adequate rest even if they are willing to try.
Ensure adequate, even coverage.
You want somebody to rally against and Mitch McConnell is not an adequate substitute, even if he does look a little bit like the groundhog that assaulted the mayor of New York City this week.
The war, Mr. Hallaj and United Nations officials in Syria said, is disintegrating administrative and social structures at a pace that makes it impossible to deliver adequate aid even if financing were available, which it is not.
A robot may fall down if the operator lacks adequate skill even if it is a traversable step.
