substitute
noun
a person or thing acting or serving in place of another.
have been substituting
-
present perfect progressiveof substitute.present perfect progressive
Used to describe an action that began in the past, has continued continuously, and is still in progress.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Since early last week, fill-in hosts have been substituting for O’Kelly.
From Los Angeles Times ● Oct. 15, 2025
Hospitals have been substituting pills for IV-administered drugs when possible, changing dosing schedules or injecting drugs directly into a vein, what’s called I.V. push.
From Seattle Times ● Jan. 9, 2018
We have been substituting the sample variances just as we did when testing hypotheses for a single mean.
From Textbooks ● Nov. 29, 2017
