introduce

introduce, insert, insinuate, interpolate, intercalate, interpose, interject mean to put between or among others. introduce is a general term for bringing or placing a thing or person into a group or body already in existence <introduced a new topic into the conversation>. insert implies putting into a fixed or open space between or among <inserted a clause in the contract>. insinuate implies introducing gradually or by gentle pressure <insinuated himself into the group>. interpolate applies to the inserting of something extraneous or spurious <interpolated her own comments into the report>. intercalate suggests an intrusive inserting of something in an existing series or sequence <new chapters intercalated with the old>. interpose suggests inserting an obstruction or cause of delay <interpose barriers to communication>. interject implies an abrupt or forced introduction <interjected a question>.

The Latin word ducere, meaning “to lead,” and its form ductus give us the roots duc and duct. Words from the Latin ducere have something to do with leading. A duct is a tube that leads from one place or organ to another. To educate, or teach, is to lead to knowledge. To induce is to lead into a particular state.