To say that something is' adequate enough 'is a tautology.

说某样东西“足够够用了”就是一个同义反复。

youdao

Adequate Enough or sufficient to satisfy a requirement. Usually used when referring to a task.

充足的足够或充分满足需求。通常是在涉及某项任务时使用的。

youdao

It's not that our skills are not sharp enough, but that our knowledge reserve is not adequate enough.

不是我们的技能练习不够，现在接触外国人的机会太多了，而正是因为知识储备不够。

youdao

Describing Arsenal's solitary effort as a 'fluke' is not an adequate enough description of the goal.

BBC: Sunderland 1-1 Arsenal

High restrictive because it only gives us an ability to observe, verify and report, and like you rightly pointed out, that doesn't sound good enough or adequate.

BBC: [an error occurred while processing this directive]

Matthew, being a practical and straightforward guy, grew to appreciate the LEAF for its smooth acceleration, spacious-enough interior and adequate acceleration power.

FORBES: Car Wars: The Silent Nissan LEAF