The phrase "a treacherous attack" is correct and usable in written English.
It can be used to describe an attack that is deceitful, dangerous, or betraying trust, often in a military or metaphorical context.
Example: "The enemy launched a treacherous attack under the cover of darkness, catching our forces off guard."
Alternatives: "a deceitful assault" or "a treasonous strike."
On Sunday night, this officer proclaimed that the latest Enterprise, like its namesake, had stepped in to avenge "a treacherous attack on our homeland".
He said last month that the recording, allegedly tapped and then posted on social media, was fabricated and part of a "treacherous attack" by US-based Islamic cleric Fethullah Gulen.
I first learned about splinters found in Tut's skull, which might indicate a treacherous attack, along with a knee injury and possible malaria infection.
The prime minister dismissed the recordings as a fabrication and part of "treacherous attack" against him and subsequently removed or fired those who had spearheaded the investigation.
Hezbollah, the Lebanese Shiite militant faction whose fighters have often served as the vanguard of Syrian government onslaughts, condemned the "treacherous" attack on "its sister Syria," calling it a continuation of a strike by Israel on a Syrian air base this week that killed seven Iranian personnel.
The army said civilians may have also been casualties of the "treacherous attack".
Otani had obviously been expecting something like this, for his men turned calmly and repulsed the treacherous attack, but with considerable loss.
"The pain of our security forces who were martyred in the treacherous attack by the separatist terrorist organization sears our hearts," Erdogan said in a statement.
Speculation ran throughout the web as Game of Thrones fans, especially those enamored of Kit Harington's hair, discussed all the possible ways that he might have survived the treacherous attack.
You wanted us to reveal to worst of ourselves in response to your treacherous attacks but we didn't submit ourselves into our lower desires and revealed the best of ourselves.
Of course 9/11 is not on the same level as World War II, but surely it is an eerie equivalent to Pearl Harbor, where, interestingly, American casualties were nearly the same and which also reflected an environment of growing tension between two different ideologies, out of which came a treacherous and unexpected attack on the United States.
