1. To foist in; to insert, as a spurious word or passage in a manuscript or book; to corrupt; to insert intermediate terms of a series.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• interpirate,
• interprate,
• interpole,
• interperate,
• intropolate,
• interpriate,
• interpurate,
• interpreate,
• intepolate,
• interpelate,
• interplat,
• interopolate,
• interoplate,
• interploate,
• interpolatte,
• interpolete,
• interfolate,
• interpointt,
• interpolabe,
• interpolaable

• interceptor,
• interrogation,
• interlayer,
• interlock,
• interlineal,
• interlope,
• intercalate,
• interpreter,
• interrelated,
• internet,
• interpersonal,
• interleukin,
• interpreting,
• interphone,
• interlard,
• internalise,
• internalize,
• intermittent,
• interlude,
• interferometer,
• interrupted,
• internal,
• interlinear,
• interpret,
• interleave,
• Interleaf,
• interplanetary,
• interposition,
• interfere,
• intercrossed,
• interdepend,
• international,
• in utero,
• interpreted,
• interrupt,
• internationale,
• interpellation,
• in trouble,
• interpretive,
• interrupter,
• in theory,
• interschool,
• interplay,
• internal ear,
• interpolation,
• interpellate,
• interpretable,
• interval,
• interrelate,
• Interlaken,
• interest rate,
• interrogate,
• Interpol,
• intercalation,
• interferon,
• intervertebral,
• inter alia,
• intercept,
• interested,
• interior,
• interrelation,
• interest,
• interlace,
• internal angle,
• interrogatory,
• interact,
• intermural,
• interrogator,
• interpenetrate,
• interlaced,
• interlingua,
• intermediate,
• interpose,
• interlink,
• interstate,
• interrogative,
• intermediately,
• interloper,
• intermit,
• interpretative.

The adverb form of "interpolate" is "interpolatingly".

The adjective form of the word "interpolate" is "interpolated".

The plural form of the word "interpolate" is "interpolates"

The singular form of the word "interpolate" is "interpolation"