What's the difference between open and optimistic?

Open


Definition:

  • (a.) Free of access; not shut up; not closed; affording unobstructed ingress or egress; not impeding or preventing passage; not locked up or covered over; -- applied to passageways; as, an open door, window, road, etc.; also, to inclosed structures or objects; as, open houses, boxes, baskets, bottles, etc.; also, to means of communication or approach by water or land; as, an open harbor or roadstead.
  • (a.) Free to be used, enjoyed, visited, or the like; not private; public; unrestricted in use; as, an open library, museum, court, or other assembly; liable to the approach, trespass, or attack of any one; unprotected; exposed.
  • (a.) Free or cleared of obstruction to progress or to view; accessible; as, an open tract; the open sea.
  • (a.) Not drawn together, closed, or contracted; extended; expanded; as, an open hand; open arms; an open flower; an open prospect.
  • (a.) Without reserve or false pretense; sincere; characterized by sincerity; unfeigned; frank; also, generous; liberal; bounteous; -- applied to personal appearance, or character, and to the expression of thought and feeling, etc.
  • (a.) Not concealed or secret; not hidden or disguised; exposed to view or to knowledge; revealed; apparent; as, open schemes or plans; open shame or guilt.
  • (a.) Not of a quality to prevent communication, as by closing water ways, blocking roads, etc.; hence, not frosty or inclement; mild; -- used of the weather or the climate; as, an open season; an open winter.
  • (a.) Not settled or adjusted; not decided or determined; not closed or withdrawn from consideration; as, an open account; an open question; to keep an offer or opportunity open.
  • (a.) Free; disengaged; unappropriated; as, to keep a day open for any purpose; to be open for an engagement.
  • (a.) Uttered with a relatively wide opening of the articulating organs; -- said of vowels; as, the an far is open as compared with the a in say.
  • (a.) Uttered, as a consonant, with the oral passage simply narrowed without closure, as in uttering s.
  • (a.) Not closed or stopped with the finger; -- said of the string of an instrument, as of a violin, when it is allowed to vibrate throughout its whole length.
  • (a.) Produced by an open string; as, an open tone.
  • (n.) Open or unobstructed space; clear land, without trees or obstructions; open ocean; open water.
  • (v. t.) To make or set open; to render free of access; to unclose; to unbar; to unlock; to remove any fastening or covering from; as, to open a door; to open a box; to open a room; to open a letter.
  • (v. t.) To spread; to expand; as, to open the hand.
  • (v. t.) To disclose; to reveal; to interpret; to explain.
  • (v. t.) To make known; to discover; also, to render available or accessible for settlements, trade, etc.
  • (v. t.) To enter upon; to begin; as, to open a discussion; to open fire upon an enemy; to open trade, or correspondence; to open a case in court, or a meeting.
  • (v. t.) To loosen or make less compact; as, to open matted cotton by separating the fibers.
  • (v. i.) To unclose; to form a hole, breach, or gap; to be unclosed; to be parted.
  • (v. i.) To expand; to spread out; to be disclosed; as, the harbor opened to our view.
  • (v. i.) To begin; to commence; as, the stock opened at par; the battery opened upon the enemy.
  • (v. i.) To bark on scent or view of the game.

Example Sentences:

  • (1) says Gregg Wallace opening the new series of Celebrity MasterChef (Mon-Fri, 2.15pm, BBC1).
  • (2) Open field behaviors and isolation-induced aggression were reduced by anxiolytics, at doses which may be within the sedative-hypnotic range.
  • (3) His son, Karim Makarius, opened the gallery to display some of the legacy bequeathed to him by his father in 2009, as well as the work of other Argentine photographers and artists – currently images by contemporary photographer Facundo de Zuviria are also on show.
  • (4) Blatter requires a two-thirds majority of the 209 voters to triumph in the opening round, with a simple majority required if it goes to a second round.
  • (5) Clonazepam was added to the treatment of patients with poorly controlled epilepsy in a double-blind trial and an open trial.
  • (6) By hybridization studies, three plasmids in two forms (open circular and supercoiled) were detected in the strain A24.
  • (7) It is the only fully-fledged casino to open in the region, outside Lebanon.
  • (8) Sixty-six patients were followed for 12 months in an open safety study.
  • (9) The PUP founder made the comments at a voters’ forum and press conference during an open day held at his Palmer Coolum Resort, where he invited the electorate to see his giant robotic dinosaur park, memorabilia including his car collection and a concert by Dean Vegas, an Elvis impersonator.
  • (10) The purpose of the present study was to analyze the effects of cromakalim (BRL 34915), a potent drug from a new class of drugs characterized as "K+ channel openers", on the electrical activity of human skeletal muscle.
  • (11) An opening wedge osteotomy is then directed posterior-dorsal to anterior-plantar, to effectively plantarflex the posterior aspect of the calcaneus.
  • (12) … or a theatre and concert hall There are a total of 16 ghost stations on the Paris metro; stops that were closed or never opened.
  • (13) The decline in the frequency of serious complications was primarily due to a decrease in the proportion of patients with open fractures treated with plate osteosynthesis from nearly 50% to 19%.
  • (14) At 100 microM-ACh the apparent open time became shorter probably due to channel blockade by ACh molecules.
  • (15) 'The French see it as an open and shut case,' says a Paris-based diplomat.
  • (16) The White House denied there had been an agreement, but said it was open in principle to such negotations.
  • (17) The following model is suggested: exogenous ATP interacts with a membrane receptor in the presence of Ca2+, a cascade of events occurs which mobilizes intracellular calcium, thereby increasing the cytosolic free Ca2+ concentration which consequently opens the calcium-activated K+ channels, which then leads to a change in membrane potential.
  • (18) The data indicate greater legitimacy and openness in discussing holocaust-related issues in the homes of ex-partisans than in the homes of ex-prisoners in concentration camps.
  • (19) He also plans to build a processing facility where tourists can gain firsthand experience of the fisheries industry, and to open a restaurant.
  • (20) He had been just asked to open their new town hall, in the hope he might donate a Shakespeare statue.

Optimistic


Definition:

  • (a.) Of or pertaining to optimism; tending, or conforming, to the opinion that all events are ordered for the best.
  • (a.) Hopeful; sanguine; as, an optimistic view.

Example Sentences:

  • (1) Johnson and Campion are optimistic that marriage equality will win out, and soon.
  • (2) Two years ago, the Intergovernmental Panel on Climate Change declared Egypt's Nile Delta to be among the top three areas on the planet most vulnerable to a rise in sea levels, and even the most optimistic predictions of global temperature increase will still displace millions of Egyptians from one of the most densely populated regions on earth.
  • (3) Even under the most optimistic scenarios, shale gas is projected to meet just 10% of European gas demand by 2030.
  • (4) I have the optimist's world view of America as a tolerant place, where anyone can grow up to be the President.
  • (5) He says there are many optimistic tales to tell – migrant families, he says, are helping to drive up standards in local schools – but such stories tend to get lost in an online world that has precious little interest in them.
  • (6) All I wanted to know was that this was not a hereditary disease – partly, I suppose, because I was so young and carefree and optimistic.
  • (7) I was optimistic that I could leave behind my reputation as the nerdy one of my friends.
  • (8) The new Poles are generally optimistic and open-minded, believing their destiny to be in their own hands, that Poland shouldn't be prisoner to its past and that the future waxes bright for their country.
  • (9) The Bank of England has a record of being over-optimistic about Britain's prospects and in its latest assessment of the economy once again cut its growth forecast.
  • (10) Excessively optimistic judgements of driving competency and accident risk have often been implicated in the disproportionate involvement of young males in traffic crashes.
  • (11) I would urge her to follow the example of Elizabeth I, who, on appointing as her chief minister Sir William Cecil, said of him: “This opinion I have of you: that whatever you know my personal opinion to be, you will give me advice that is best for the realm.” Valerie Crews Beckenham, Kent • Another immensely qualified person loses their job for not being optimistic enough about Brexit.
  • (12) English speakers are the least optimistic about the chances of avoiding dangerous climate change Out of more than 6,000 self-selecting respondents, many expressed dismay at the slow pace of political action on climate change.
  • (13) Both brothers had been in optimistic mood earlier in the day.
  • (14) Arsène Wenger said he hopes the midfielder will return in four weeks and, “if all goes well, three”, but the estimate is believed to be optimistic.
  • (15) The optimists, not the least of whom are the British, believe that the summit is a starting point on which to build.
  • (16) "We'd have preferred that, in addition to these increases, we had seen our market share grow overall this quarter but we are optimistic that some of the sector's major rebranding campaigns and marketing initiatives will start taking effect in results this year."
  • (17) The most optimistic of them sees a fall by 2030, but this would require huge investments in renewable energy as well as financial and technical support from overseas.
  • (18) Jints fans, suddenly optimistic about their postseason chances, forgot how bad their team was over the fortnight - today they are being reminded.
  • (19) Reagan's youthful hero was FDR – another optimist, albeit a far steelier one –  who turned the federal government into the agent of recovery from the Great Depression and of victory in World War II.
  • (20) A recent National Audit Office study pinpointed these precisely: the DWP’s approach, it finds, is too rigid; its policy assumptions tend to be untested and over-optimistic; strategically, it fails to anticipate uncertainty (specifically, the possibility of failure); it neglects to monitor progress, so does not notice when things go wrong until far too late.