What's the adjective for introductionless? Here's the word you're looking for.
Included below are past participle and present participle forms for the
verbs intro, introduce, introduct and intromit which may be used as adjectives within certain contexts.
“After the introductory remarks, Zarathustra sets forth at once the leading principle of his philosophy.”
“The book can prove useful for managers to get acquainted with the introductory concepts.”
“This will allow for an introductory exploration into the ways in which his portrayal of a disenchanted white-collar and suburban ennui treads the fault lines of laissez-faire capitalism.”