4
incoming
4
infusion
4
ingression(noun, state, accept, admission)
4
insert
4
interjection
4
interpolation(noun, new, opening, something, supplement)
4
invention(noun, creation, revolution, novelty)
4
preliminaries(noun, start, new, beginning, opening)
4
primer(noun, new, opening, something, preface)
3
antecedent(noun, cause, source, derivation, prelude)
3
dawn(noun, cause, start, top, beginning)
3
discovery(noun, finding, uncovering)
3
emergence(noun, cause, development, growth, beginning)
3
epilogue
3
frontispiece
3
hornbook(noun, new, opening, textbook, something)
3
infiltration(noun, insertion)
3
influx(noun, rush, new, opening, flow)
3
inoculation
3
introduce
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APASmart Define. (2016). introduction thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/introduction/thesaurus/synonyms
ChicagoSmart Define. 2016. "introduction thesaurus" https://smartdefine.org/introduction/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2016, introduction thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/introduction/thesaurus/synonyms>.
MLASmart Define. "introduction thesaurus" 29 February 2016. Web. 20 September 2026. <https://smartdefine.org/introduction/thesaurus/synonyms>