The phrase "all assurances" is correct and usable in written English.
It can be used when referring to complete guarantees or promises regarding a situation or outcome.
Example: "We provide all assurances that your data will be kept secure and confidential."
Alternatives: "complete guarantees" or "full assurances".
"The Pakistan Cricket Board has given us all assurances that everything would be fine.
I'm not being indiscreet here: these are all assurances that Whittingdale has made public many, many times.
However, the cost of making a fresh claim to benefit in real terms is around £500 and is therefore [a] false economy at its worst in order to try to climb up the league table – which, despite all assurances, do exist within clusters, districts and regions for all departmental targets.
For the cadre of devotees in attendance, including members of local Miata owners' clubs, that might be the greatest gift of all: assurances of many more anniversaries to come.
"At the start of the project, 505 Games received all assurances from the developer that the engine was up to the task of creating a dynamic, cutting-edge cricket game for the modern age across multiple platforms, and unfortunately those assurances were found to be misplaced".
"The court provided all assurances of a fair trial through a team of 17 defense attorneys selected by the defendants.
"We will all require assurances that the program is financed and that involves assurances from our Eurogroup partners that adequate finance is available," Mr. Lipsky told reporters.
For all these assurances from public officials, a pervasive "what can you do" attitude was expressed by many residents.
"Here we are all these weeks later and all these assurances later, and things are getting worse," Mr. Craner said in Washington.
He also accused the prime minister of going "totally against all the assurances" that "she would not allow Northern Ireland be treated differently from the rest of the UK".
