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obstacle
5 dictionary results for: Obstacle
Dictionary.com Unabridged (v 1.1) - Cite This Source - Share This
ob·sta·cle       [ob-stuh-kuhl] Pronunciation Key
–noun
something that obstructs or hinders progress.

[Origin: 1300–50; ME < OF < L obstāculum, equiv. to obstā(re) to face, block, hinder (ob- ob- + stāre to stand) + -culum -cle2]

Obstacle, obstruction, hindrance, impediment refer to something that interferes with or prevents action or progress. An obstacle is something, material or nonmaterial, that stands in the way of literal or figurative progress: Lack of imagination is an obstacle to one's advancement. An obstruction is something that more or less completely blocks a passage: A blood clot is an obstruction to the circulation. A hindrance keeps back by interfering and delaying: Interruptions are a hindrance to one's work. An impediment interferes with proper functioning: an impediment in one's speech.
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American Heritage Dictionary - Cite This Source - Share This
ob·sta·cle       (ŏb'stə-kəl)  Pronunciation Key 
n.   One that opposes, stands in the way of, or holds up progress.


[Middle English, from Old French, from Latin obstāculum, from obstāre, to hinder : ob-, against; see ob- + stāre, to stand; see stā- in Indo-European roots.]

Synonyms: All of these nouns refer to something that prevents action or slows progress. Obstacle applies to something that stands in the way: "We combat obstacles in order to get repose" (Henry Adams).
An obstruction makes passage or progress difficult: A sandbar is an obstruction to navigation.
Bar and barrier suggest an obstruction that confines or prevents exit or entry: "Tyranny may always enter—there is no charm, no bar against it—the only bar against it is a large resolute breed of men" (Walt Whitman). "Literature is my Utopia.... No barrier of the senses shuts me out from the sweet, gracious discourse of my book friends" (Helen Keller).
Block suggests obstruction that effectively prevents all passage: I had a mental block and couldn't remember the date.
Hindrance and impediment are applied to something that interferes with or delays passage or progress: "an attachment that would be a hindrance to him in any honorable career" (Thomas Hardy). Overcrowded classrooms are an impediment to learning.
A snag is an unforeseen or hidden, often transitory obstacle: Due to a snag in plans, the project was delayed.

Online Etymology Dictionary - Cite This Source - Share This
obstacle 
c.1340, from O.Fr. ostacle "hindrance," from L. obstaculum "a hindrance, obstacle," from obstare "stand opposite to, block, hinder," from ob "against" + stare "to stand," from PIE base *sta- "to stand" (see stet).
"The lover thinks more often of reaching his mistress than the husband of guarding his wife; the prisoner thinks more often of escaping than the gaoler of shutting his door; and so, whatever the obstacles may be, the lover and the prisoner ought to succeed." [Stendhal]
Obstacle course is attested from 1973.

WordNet - Cite This Source - Share This
obstacle

noun
1. something immaterial that stands in the way and must be circumvented or surmounted; "lack of imagination is an obstacle to one's advancement"; "the poverty of a district is an obstacle to good education"; "the filibuster was a major obstruction to the success of their plan" 
2. an obstruction that stands in the way (and must be removed or surmounted or circumvented) 

Webster's Revised Unabridged Dictionary - Cite This Source - Share This

Obstacle

Ob"sta*cle\, n. [F., fr. L. obstaculum, fr. obstare to withstand, oppose; ob (see Ob-) + stare to stand. See Stand. and cf. Oust, v.] That which stands in the way, or opposes; anything that hinders progress; a hindrance; an obstruction, physical or moral.

If all obstacles were cut away. And that my path were even to the crown. --Shak.

Syn: Impediment; obstuction; hindrance; difficulty. See Impediment, and Obstruction.

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