<p><strong>Adjective</strong></p><ul><li>not closed or barred at the time</li><li>set so as to permit passage</li><li>having no means of closing or barring</li><li>having the interior immediately accessible</li><li>relatively free of obstructions to sight, movement, or internal arrangement</li><li>constructed so as to be without cover or enclosure</li><li>having relatively large or numerous spaces, voids, or intervals</li><li>perforated or porous</li><li>relatively unoccupied by buildings, fences, trees, etc.</li><li>not covered or closed; with certain parts apart</li><li>without a covering, especially a protective covering; unprotected; unenclosed; exposed</li><li>extended or unfolded</li><li>without restrictions as to who may participate</li><li>accessible or available to follow</li><li>not taken or filled; not preempted; available; vacant</li><li>ready for or carrying on normal trade or business</li><li>not engaged or committed</li><li>exposed to general view or knowledge; existing, carried on, etc., without concealment</li><li>acting publicly or without concealment</li><li>unreserved, candid, or frank</li><li>generous, liberal, or bounteous</li><li>liable or subject</li><li>undecided; unsettled</li><li>without effective or enforced legal, commercial, or moral regulations</li><li>unguarded by an opponent</li><li>noting the part of the sea beyond headlands or enclosing areas of land</li><li>free of ice, as a body of water or a seaport</li><li>free of navigational hazards</li><li>available for foreign trade; not closed by government regulations or by considerations of health</li><li>in operation; live</li><li>occurring at the beginning of a group of words or characters that is set off</li></ul><p><strong>Verb</strong></p><ul><li>to move (a door, window sash, etc.) from a shut or closed position so as to admit of passage</li><li>to render (a doorway, gateway, window, etc.) unobstructed</li><li>to render the interior of (a box, drawer, etc.) readily accessible</li><li>to clear (a passage, channel, etc.) of obstructions</li><li>to clear (areas or passages in the body)</li><li>to give access to; make accessible or available, as for use</li><li>to establish for business purposes or for public use</li><li>to set in action, begin, start, or commence</li><li>to uncover, lay bare, or expose to view</li><li>to expand, unfold, or spread out</li><li>to make less compact, less closely spaced, or the like</li><li>to disclose, reveal, or divulge</li><li>to render accessible to knowledge, enlightenment, sympathy, etc.</li><li>to cut, blast, or break into</li><li>to make or produce (an opening) by cutting or breaking, or by pushing aside or removing obstructions</li><li>to make an incision or opening in</li><li>Law: to recall or revoke (a judgment, decree, etc.) for the purpose of allowing further contest or delay</li><li>to make the first statement of (a case) to the court or jury</li></ul><p><strong>Noun</strong></p><ul><li>an open or clear space</li><li>the open air</li><li>the open water, as of the sea</li><li>an opening or aperture</li><li>an opening or opportunity</li><li>a contest or tournament in which both amateurs and professionals may compete, especially in golf and tennis</li><li>the condition of being unconcealed, recognized, or publicly known</li></ul><p><strong>Verb Phrase</strong></p><ul><li>to become or make open</li><li>to expand, especially before the eye</li><li>to achieve the initial development of</li></ul>