The phrase "seemingly flawless" is correct and can be used in written English.
You can use this phrase to describe something that appears to be perfect in spite of potential flaws and imperfections. For example, you could say, "The couple's performance of their wedding vows was seemingly flawless, though one can never know the internal turmoil they were experiencing."
That Gluck's magnificent 1777 "Armide," a seemingly flawless masterpiece, continues to be a rarity is inexplicable.
His ire was provoked by the failure of China's Chen Yibing to win a gold medal for his seemingly flawless performance on the rings.
As for those costs cited by vellum's opponents, Mr Wright unrolls a seemingly flawless replica Magna Carta, and points to his standard Epson Stylus printer.
He was hailed as a once-in-a-generation pitcher at Southern California, with an unheard-of 17-to-1 strikeout-to-walk ratio and seemingly flawless mechanics.
It was there, on an evening of sustained pandemonium, that Germany's Bettina Hoy rode a seemingly flawless round, only to be penalised for crossing the starting line twice.
He is the editor of This Old House, the magazine associated with the popular PBS show, which has turned home improvement into an art form, its knowledgeable contractors guiding homeowners through seemingly flawless renovations for the last 34 years.
Noted jazz historian Gunther Schuller stated: "Dorsey was clearly the creator and master of this smooth 'singing' trombone style, so seemingly effortless, largely because of his flawless breath control".
The US will hope Solo, seemingly unaffected by the taunts of the crowd and flawless against France, has the errors out of her system without serious consequence.
This is an opera of flawless workmanship reconciled with the dramatic claims of a seemingly artificial and cynical libretto, which in fact exposes human frailty but is tempered by one of Mozart's most sympathetic and melodious scores.
Enviously, we watch flawless regeneration of limbs, lens, retina, spinal cord, brain, heart, and neuro-sensory cells, seemingly throughout life, by distant vertebrate relatives.
