The phrase "astonishing strength" is correct and usable in written English.
It can be used to describe an impressive or surprising level of physical or metaphorical strength in various contexts.
Example: "The athlete displayed astonishing strength during the competition, lifting weights that seemed impossible for most."
Alternatives: "incredible power" or "remarkable force."
Depicting Kahlo's reaction to her accident, she wraps a large chain around her leg and reveals both pain and astonishing strength as she says: "I am not dead.
When the nurse put Kieran on my breast to feed, I was in a daze of ecstasy and so focused on the astonishing strength of his newborn fingers curled around mine, I hardly noticed.
Interested in the startling beauty and astonishing strength of spider webs, Saraceno's project interfaces the natural world with technological innovation.
Their elegant wings span, their astonishing strength and natural ability to survive all conditions is a fun journey that I thoroughly enjoyed.
Pacquiao has shown "astonishing" strength in Filipino communities in Los Angeles, San Francisco and San Diego, said Mark Taffet, a senior vice president of HBO Sports, which merged with De La Hoya's support in Latino communities and crossover appeal.
The paper says the "astonishing strength" of the list defies expectations that wealth creation would stall in the run up to last year's EU referendum and then crash after the vote for Brexit.
VI.BEYOND RESTRAINT It is unfortunate that constitutional law is now once again facing the severe challenge of dealing with the astonishing strengths and risks associated with our version of capitalism.
They are excellent conductors of heat and electricity, and they possess an astonishing tensile strength.
He and his collaborators report in Nature that scientists had overlooked the astonishing physical strength of the thin outer membrane that clings to E. coli's stout cell wall.
It was an astonishing show of strength.
What followed was an astonishing test of strength.
