in an interchangeable manner
"these terms can be used interchangeably"
with the ability of being interchanged or swapped
Samuel Johnson's Dictionary
Alternately; in a manner whereby each gives and receives.
In these two things the East and West churches did interchangeably both confront the Jews and concur with them. Hook.
This in myself I boldly will defend,
And interchangeably hurl down my gage
Upon this overweening traitor's foot. William Shakespeare, R. II.
These articles were signed by our plenipotentiaries, and those of Holland; but not by the French, although it ought to have been done interchangeably; and the ministers here prevailed on the queen to execute a ratification of articles, which only one part had signed. Jonathan Swift.
Origin: from interchangeable.
The numerical value of interchangeably in Chaldean Numerology is: 1
The numerical value of interchangeably in Pythagorean Numerology is: 9