Interpolate

in-tėr′po-lāt, v.t. to insert unfairly, as a spurious word or pa age in a book or manuscript, to foist in: to corrupt: ( math. ) to fill up the intermediate terms of a series.— adj. Inter′polable .— ns. Interpolā′tion ; Inter′polator . [L. interpolāre , - ātum — inter , between, polīre , to polish.]