I think you mean this. The problem is too severe to be overlooked. This means we can't overlook it.
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I think you mean this.
The problem is too severe to be overlooked.
This means we can't overlook it.
Clive
ElmaAffirmative to negative
Aff: The problem is too severe [to be overlooked / to overlook].
Neg: The problem is not severe enough to [investigate / take a look at / pay attention to].
too [ADJ] to > not [ADJ] enough to
CJ