| Main Entry: | |
| Part of Speech: | noun |
| Definition: | start of an event or action |
| Synonyms: | alpha, basis, birth, blastoff, commencement, creation, dawn, dawning, day one, genesis, inauguration, inception, induction, infancy, initiation, installation, introduction, kickoff, onset, opener, opening, origin, origination, outset, point of departure, preface, prelude, presentation, rise, root, rudiment, source, spring, square one, starting point, takeoff, threshold, top |
| Antonyms: | completion, conclusion, consummation, end, ending, finish, goal, termination |
| Main Entry: | debut |
| Part of Speech: | noun |
| Definition: | first public appearance |
| Synonyms: | admission, appearance, beginning, bow, coming out, coming out party, entrance, entree, first step, graduating, graduation, inauguration, incoming, initiation, introduction, launching, opener, presentation |
| Notes: | a debut is a first public appearance; a premiere is a first performance, showing, or broadcast |
| Antonyms: | closing, finale |
| Main Entry: | key |
| Part of Speech: | noun |
| Definition: | item that unlocks |
| Synonyms: | latchkey, opener, passkey, screw*, skeleton |
| Antonyms: | lock |
| Main Entry: | knob |
| Part of Speech: | noun |
| Definition: | lump, handle |
| Synonyms: | bulge, bulk, bump, bunch, doorknob, hump, knot, knurl, latch, lever, nub, opener, projection, protrusion, protuberance, snag, stud, swell, swelling, trigger, tumor |
| Main Entry: | opening |
| Part of Speech: | noun |
| Definition: | beginning |
| Synonyms: | birth, coming out, commencement, curtain-raiser, dawn, inauguration, inception, initiation, kickoff, launch, launching, onset, opener, outset, start |
| Antonyms: | closing, conclusion, ending, finish |
| Main Entry: | origin |
| Part of Speech: | noun |
| Definition: | beginning, inception |
| Synonyms: | alpha, birth, blast off, commencement, creation, dawn, dawning, day one, early stage, embarkation, emergence, entrance, entry, forging, foundation, genesis, git go, inauguration, ingress, initiation, introduction, launch, nativity, opener, origination, outbreak, outset, rise, square one, start, starting point |
| Antonyms: | close, completion, conclusion, death, end, finale, termination |
| Main Entry: | curtain raiser |
| Part of Speech: | noun |
| Definition: | short preliminary event |
| Synonyms: | countdown, curtain lifter, curtain warmer, inaugural, kickoff, lead-in, opener, opening gun, opening shot, preliminary, preview, run-up, walk-up, warm-up |
| Main Entry: | open sesame |
| Part of Speech: | noun |
| Definition: | magic words for entry |
| Synonyms: | abracadabra, abraxas, access, key, keyword, magic formula, opener, password, paternoster, secret sign, watchword |
| Main Entry: | opening night |
| Part of Speech: | noun |
| Definition: | first performance |
| Synonyms: | debut, first appearance, first night, first showing, gala opening, gala performance, opener, premiere, preview, sneak preview, world premiere |