Nouns

(n)inserta folded section placed between the leaves of another publication
(n)insert, insetan artifact that is inserted or is to be inserted
(n)cut-in, insert(broadcasting) a local announcement inserted into a network program
(n)cut-in, insert(film) a still picture that is introduced and that interrupts the action of a film

Verbs

(v)insert, infix, enter, introduceput or introduce into something“insert a picture into the text”
(v)insert, enclose, inclose, stick in, put in, introduceplace, fit, or thrust (something) into another thing“Insert your ticket here”
(v)tuck, insertfit snugly into“insert your ticket into the slot”, “tuck your shirttail in”
(v)slip in, stick in, sneak in, insertinsert casually“She slipped in a reference to her own work”