interpolate
verb (used with object)
to introduce (something additional or extraneous) between other things or parts; interject; interpose; intercalate.
Used to describe an ongoing action or continuous state that was happening at a specific time in the past.
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
ROBERT-SON brought against the LORD-ADVOCATE the grave charge that he was "interpolating an extraneous and alien body into this business."
From Punch, or the London Charivari, Volume 100, April 18, 1891 by Various