"outright flaws" is a correct and usable phrase in written English.
You can use it to describe a situation where something is flawed entirely and without any excuses or room for interpretation. For example, "This policy had outright flaws that made it difficult to implement."
Their ideas ("how dare Basile allow Knox's PR spin, and her own wilful ignorance, to conceal that") are assumptive and outright flawed.
Kazin is frank about the flaws and outright evils of certain leftist movements — most notably, the midcentury Communist Party.
Some scientists believe clones would face health problems ranging from subtle but potentially lethal flaws to outright deformity.
It's an alphabetical list and includes all kinds of character flaws and outright sins.
There's also value in creating a new process whereby a previous initiative can be outright repealed, once its flaws have become painfully obvious to all.
We're used to people like Kundera banging on about Don Quixote, but Amis brings the novel alive by conceding that much of it is dead wood: "While clearly an impregnable masterpiece, Don Quixote suffers from one fairly serious flaw - that of outright unreadability".
The logic is at best flawed and at worst, an outright nightmare for those left holding the ball down the line.
But even in Stapel papers that weren't outright fraudulent, the commissions found plenty of serious flaws that point to a culture of "sloppy" science.
Amis's great virtue is his outright readability - but could that also contain a flaw?
Yes, they're outright villains in some cases, but it's in their flaws that we can see the earth-iness; that special something that Marvel just seemed to "get" all the way back in the 60s and 70s.
