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Noun: opener  ow-pu-nu(r)
  1. The first event in a series
    "she played Chopin for her opener"; "the season's opener was a game against the Yankees"
  2. A person who unfastens, unwraps or opens
    - undoer, unfastener, untier
  3. A hand tool used for opening sealed containers (bottles or cans)
Adjective: open (opener,openest)  ow-pun
  1. Affording unobstructed entrance and exit; not shut or closed
    "they left the door open"; "an open door";
    - unfastened
  2. Affording free passage or access
    "open drains"; "the road is open to traffic"; "open ranks"
  3. With no protection or shield
    "open to the weather"; "an open wound";
    - exposed
  4. Available to or viewable by the public
    "an open protest"; "an open letter to the editor"
  5. Used of mouth or eyes
    "keep your eyes open";
    - opened
  6. (set theory) of an interval that contains neither of its endpoints
  7. Ready or willing to receive favourably
    "open to the proposals";
    - receptive
  8. Observable; not secret or hidden
    "open ballots";
    - overt
  9. Not requiring union membership
    "an open shop employs nonunion workers"
  10. Not having been filled
    "the job is still open"
  11. Accessible to all
    "open season"; "an open economy"
  12. Not defended or capable of being defended
    "an open city"; "open to attack";
    - assailable, undefendable, undefended
  13. (of textures) full of small openings or gaps
    "an open texture";
    - loose
  14. Having no protecting cover or enclosure
    "an open boat"; "an open fire"; "open sports cars"
  15. Not brought to a conclusion; subject to further thought
    "an open question";
    - undecided, undetermined, unresolved
  16. Not sealed or having been unsealed
    "the letter was already open";
    - opened
  17. Without undue constriction as from e.g. tenseness or inhibition
    "the clarity and resonance of an open tone"; "her natural and open response"
  18. Possibly accepting or permitting
    "open to interpretation"; "an issue open to question";
    - capable, subject
  19. Affording free passage or view
    "open waters"; "the open countryside";
    - clear
  20. Openly straightforward and direct without reserve or secretiveness
    "an open and trusting nature";
    - candid, heart-to-heart
  21. Ready for business
    "the stores are open"

Derived forms: openers

See also: acceptant, acceptive, active, admissive, agape, agaze, ajar, artless, assimilative, available, bald, barefaced, coarse, explicit, expressed, gaping, harsh, hospitable, ingenuous, naked, nonunion, opened, out on a limb, public, raw, staring, susceptible, unconcealed, unconstricted, undisguised, unenclosed, unobstructed, unprotected, unrestricted, unsealed, unsettled, unstoppered, visible, vulnerable, wide, wide-eyed, wide-open, yawning

Type of: hand tool, individual, mortal, person, somebody, someone, soul, start

Antonym: closed, shut

Encyclopedia: Opener, Can, Hand, Folding, Type I

Open, closed, open