Synonym: bare, begin, disclose, establish, expose, initiate, launch, originate, reveal, show, start, uncover, unfold. Antonym: close, shut. Similar words: openly, opening, in the open, spend, opera, hope, cope, pencil. Meaning: ['əʊpən] 
n. 1. a clear or unobstructed space or expanse of land or water 2. where the air is unconfined 3. a tournament in which both professionals and amateurs may play 4. information that has become public. v. 1. cause to open or to become open 2. start to operate or function or cause to start operating or functioning 3. become open 4. begin or set in action, of meetings, speeches, recitals, etc. 5. spread out or open from a closed or folded state 6. make available 7. become available 8. have an opening or passage or outlet 9. make the opening move 10. afford access to 11. display the contents of a file or start an application as on a computer. adj. 1. affording unobstructed entrance and exit; not shut or closed 2. affording free passage or access 3. with no protection or shield 4. open to or in view of all 5. used of mouth or eyes 6. not having been filled 7. accessible to all 8. not defended or capable of being defended 9. (of textures) full of small openings or gaps 10. having no protecting cover or enclosure 11. (set theory) of an interval that contains neither of its endpoints 12. not brought to a conclusion; subject to further thought 13. not sealed or having been unsealed 14. without undue constriction as from e.g. tenseness or inhibition 15. ready or willing to receive favorably 16. open and observable; not secret or hidden 17. not requiring union membership 18. possibly accepting or permitting 19. affording free passage or view 20. openly straightforward and direct without reserve or secretiveness 21. ready for business.
n. 1. a clear or unobstructed space or expanse of land or water 2. where the air is unconfined 3. a tournament in which both professionals and amateurs may play 4. information that has become public. v. 1. cause to open or to become open 2. start to operate or function or cause to start operating or functioning 3. become open 4. begin or set in action, of meetings, speeches, recitals, etc. 5. spread out or open from a closed or folded state 6. make available 7. become available 8. have an opening or passage or outlet 9. make the opening move 10. afford access to 11. display the contents of a file or start an application as on a computer. adj. 1. affording unobstructed entrance and exit; not shut or closed 2. affording free passage or access 3. with no protection or shield 4. open to or in view of all 5. used of mouth or eyes 6. not having been filled 7. accessible to all 8. not defended or capable of being defended 9. (of textures) full of small openings or gaps 10. having no protecting cover or enclosure 11. (set theory) of an interval that contains neither of its endpoints 12. not brought to a conclusion; subject to further thought 13. not sealed or having been unsealed 14. without undue constriction as from e.g. tenseness or inhibition 15. ready or willing to receive favorably 16. open and observable; not secret or hidden 17. not requiring union membership 18. possibly accepting or permitting 19. affording free passage or view 20. openly straightforward and direct without reserve or secretiveness 21. ready for business. 
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61. The open ground was several acres in extent.
62. He flung open every windows in his bedroom.
63. The envelope's seal was torn open.
64. I'll be open and sincere with you.
65. The valve failed to open/close.
66. You can't open the door from the outside.
67. He refused to open his lips.
68. What time is locked, wait for time to open.
69. There are various options open to you.
70. Once there were no two hearts so open, no feelings so in harmony. Now we are strangers, worse than strangers, for we may never become acquainted.
71. It's so stale in here, Mary, please open the window and air this place out.
72. You can only open a tin of food with a tin opener.
73. Mind you, don't leave the windows open when you go out.
74. He was adrift in an open boat for three days.
75. The leadership want to present a single slate of candidates to be approved in an open vote.
76. I didn't open my mouth until he talked himself out.
77. Give the door a good kick if it won't open.
78. Coincident with the talks[sentencedict.com], the bank was permitted to open a New York branch.
79. It was a bold move on their part to open a branch of the business in France.
80. This agreement is very ambiguous and open to various interpretations.
81. The lock was rusty, so we had to smash the door open.
82. He had the drawer open and was thumbing through the files.
83. Working in the open air has made him very healthy.
83. Sentencedict.com try its best to gather and build good sentences.
84. All the windows were open, giving the house an airy feeling.
85. The President-elect followed in an open carriage drawn by six beautiful gray horses.
86. He could hardly open his mouth without using one or other of his tags.
87. He heard the car engine running sweetly beyond the open door.
88. Now the wind to flowers do not open,only a lovesickness.
89. The tournament is open to amateurs as well as professionals.
90. In his open car, the President was a sitting target for assassins.