The word "substituting" is correct and usable in written English.
You can use it when you want to express the idea of replacing something with something else. For example, "He was substituting sugar for artificial sweetener in his coffee."
There was a get-out clause, which no one expected to invoke, substituting Douglas for Tyson.
The environmental benefit of substituting fossil-fuel power with solar power is real and significant and we calculated that separately.
Substituting the single variety, enriched with an egg yolk, as Larousse suggests, adds body without too much weight, while a little flour helps it cling to the meat.
There are also the practical difficulties involved in substituting one currency for another.
This newspaper favours legal abortion, but in Roe the justices invented the law rather than interpreting it, substituting their preferences for those of voters.
"To enter on an office" is so unusual that Mr Biden can be forgiven for substituting a similar preposition into this rare bird of a phrase.
They concoct what they call a "synthetic counterfactual", meaning a projection of how EU members' economies would have performed had they not joined the EU, by substituting data from non-member countries with similar economies.
Another scam, involving substituting a cheap species of white fish for a pricey one, is hard to spot once the fish has been flaked, breaded and fried.
*Even though we have every reason to think that substituting bank debt for sovereign debt creates net benefits for society, it is hard to find market pricings that suggest investors believe this to be the case.
Just substituting gas for coal would not solve the world's climate problems Europe aspires to emission cuts of 80% or more by 2050, which would require any carbon dioxide from gas plants to be sequestered underground, not emitted to the air.
"At a minimum, Americans should understand the consequences of substituting generals and Green Berets for diplomats, and 19-year-old paratroopers for police and aid workers on nation-building missions," she says.
