"swiftly accepted" is correct and usable in written English.
It is a phrase that describes something being accepted quickly or without hesitation. Example: The new policy was swiftly accepted by the employees, who were happy to see positive changes being implemented.
The $1m prize would be swiftly accepted by most mathematicians.
Unable to believe my good fortune, I swiftly accepted.
He swiftly accepted an invitation from Obama to visit following his win.
More than two dozen opposition candidates formed a united front and inflicted a stinging defeat on him, which he swiftly accepted.
Last year Mr Chávez's Venezuela was swiftly accepted as a full member, at the urging of Argentina's president, Néstor Kirchner, and his Brazilian counterpart, Luiz Inácio Lula da Silva.
He sent his first-novel manuscript to André Deutsch, finding the publisher's address on VS Naipaul's A Bend in the River, where it was swiftly accepted by Naipaul's then editor.
By contrast, Andreani swiftly accepts, even embraces, the darkness within himself.
Unlike Ploner et al. [ 8], we see no reason to swiftly accept the conjecture that the majority of gene pairs must be composed of independent genes, while trying to explain the actually observed strong and long-range correlations in the majority of gene pairs [ 9- 12] by "non-biological" causes.
"Mike acted swiftly and I accepted that, and we go forward.
Together with the Managing Editor Dr. Emanuel Severus, the editorial team and peer-review system, we will ensure that all submitted manuscripts are reviewed fairly and swiftly, and once accepted, published online rapidly.
He said he was touched by how swiftly his invitation was accepted by Jay-Z, who previously called himself the "Black Mr. Buffett" in his 2003 song "Threat".
