187 entries under noun topic. ×

2
inauguration(appearance, top, beginning, opening)
2
initiation(appearance, top, beginning, opening)
2
initiator
2
knob(handle, lump, button, dial)
2
launching(appearance, start, beginning, opening)
2
open sesame
2
origin(cause, top, beginning, opening)
2
preliminary(approach, introduction, preface, kickoff)
2
skeleton key
2
starting point(expression, top, beginning, opening)
1
admission(appearance, start, beginning, onset)
1
alpha(top, beginning, opening, creation)
1
basis(cause, top, opening, source)
1
birth(start, top, beginning, opening)
1
blast off(expression, cause, beginning, birth)
1
bloomer
1
bow(appearance, start, beginning, onset)
1
commencement(top, beginning, opening, creation)
1
committer
1
contributor
11 years ago|5.1k views|share |citing 
APASmart Define. (2015). opener thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/opener/thesaurus/synonyms
ChicagoSmart Define. 2015. "opener thesaurus" https://smartdefine.org/opener/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, opener thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/opener/thesaurus/synonyms>.
MLASmart Define. "opener thesaurus" 14 April 2015. Web. 28 September 2026. <https://smartdefine.org/opener/thesaurus/synonyms>