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An obstacle (also called a barrier, impediment, or stumbling block) is an object, thing, action or situation that causes an obstruction. [1] A obstacle blocks or hinders our way forward. Different types of obstacles include physical, economic , biopsychosocial , cultural, political, technological and military.
An antonym is one of a pair of words with opposite meanings. Each word in the pair is the antithesis of the other. A word may have more than one antonym. There are three categories of antonyms identified by the nature of the relationship between the opposed meanings.
An unpaired word is one that, according to the usual rules of the language, would appear to have a related word but does not. [1] Such words usually have a prefix or suffix that would imply that there is an antonym , with the prefix or suffix being absent or opposite.
For instance cleave "separate" is from Old English clēofan, while cleave "adhere" is from Old English clifian, which was pronounced differently. Other contronyms are a form of polysemy, but where a single word acquires different and ultimately opposite definitions.
A thesaurus (pl.: thesauri or thesauruses), sometimes called a synonym dictionary or dictionary of synonyms, is a reference work which arranges words by their meanings (or in simpler terms, a book where one can find different words with similar meanings to other words), [1] [2] sometimes as a hierarchy of broader and narrower terms, sometimes simply as lists of synonyms and antonyms.
Converses can be understood as a pair of words where one word implies a relationship between two objects, while the other implies the existence of the same relationship when the objects are reversed. [3] Converses are sometimes referred to as complementary antonyms because an "either/or" relationship is present between them. One exists only ...
When the antiphrasal use is very common, the word can become an auto-antonym, [3] having opposite meanings depending on context. For example, Spanish dichoso [ 4 ] originally meant "fortunate, blissful" as in tierra dichosa , "fortunate land", but it acquired the ironic and colloquial meaning of "infortunate, bothersome" as in ¡Dichosas moscas ...
A semantic lexicon is a digital dictionary of words labeled with semantic classes so associations can be drawn between words that have not previously been encountered. [1] Semantic lexicons are built upon semantic networks, which represent the semantic relations between words. The difference between a semantic lexicon and a semantic network is ...