2
destroyer
2
embarkation(noun, cause, beginning, foundation, origin)
2
franker
2
freer
2
generator(noun, cause, source, derivation)
2
inauguration(noun, appearance, top, beginning, opening)
2
inaugurator
2
initiation(noun, appearance, top, beginning, opening)
2
initiator
2
knob(noun, handle, lump, button, dial)
2
launching(noun, appearance, start, beginning, opening)
2
open sesame(noun, entry)
2
origin(noun, cause, top, beginning, opening)
2
password(opening, instrumentality)
2
preliminary(noun, approach, introduction, preface, kickoff)
2
skeleton key
2
starting point(noun, expression, top, beginning, opening)
2
unfolder
1
admission(noun, appearance, start, beginning, onset)
1
alpha(noun, top, beginning, opening, creation)
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APASmart Define. (2015). opener thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/opener/thesaurus/synonyms
ChicagoSmart Define. 2015. "opener thesaurus" https://smartdefine.org/opener/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, opener thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/opener/thesaurus/synonyms>.
MLASmart Define. "opener thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/opener/thesaurus/synonyms>