The definition of OK is all right or correctly.(adjective)
An example of OK used as an adjective is in the phrase "OK job," which means a job that was done correctly.
Ok means all right or correctly.(adverb)
An example of OK used as an adverb is in the phrase "speaks OK," which means speaks correctly.
OK is defined as all right.(interjection)
An example of OK used as an interjection is in the sentence, "OK! I will be right there!" which means "All right! I will be right there!"
OK is an approval.(noun)
An example of OK used as a noun is in the sentence, "He gave the OK for the project to begin," which means that he said it was fine for the project to begin.
OK is defined as to approve.(verb)
An example of OK is to approve a conference proposal.
See OK in Webster's New World College Dictionary
☆ or O.K.
adjective, adverb, interjection
Origin: orig. U.S. colloq.: first known use (March 23, 1839) by C. G. Greene, editor, in the Boston Morning Post, as if abbrev. for “oll korrect,” facetious misspelling of all correct; ? altered < Scot dial. och aye, ah yes, oh yes < Gael och, ah, oh + aye
See OK in American Heritage Dictionary 4
or o·kaynoun pl. OK's OK's or o·kays
Origin: Abbreviation of oll korrect
Origin: , slang respelling of all correct. Word History: OK is a quintessentially American term that has spread from English to many other languages. Its origin was the subject of scholarly debate for many years until Allen Walker Read showed that OK is based on a joke of sorts. OK is first recorded in 1839 but was probably in circulation before that date. During the 1830s there was a humoristic fashion in Boston newspapers to reduce a phrase to initials and supply an explanation in parentheses. Sometimes the abbreviations were misspelled to add to the humor. OK was used in March 1839 as an abbreviation for all correct, the joke being that neither the O nor the K was correct. Originally spelled with periods, this term outlived most similar abbreviations owing to its use in President Martin Van Buren's 1840 campaign for reelection. Because he was born in Kinderhook, New York, Van Buren was nicknamed Old Kinderhook, and the abbreviation proved eminently suitable for political slogans. That same year, an editorial referring to the receipt of a pin with the slogan O.K. had this comment: “frightful letters … significant of the birth-place of Martin Van Buren, old Kinderhook, as also the rallying word of the Democracy of the late election, ‘all correct’ ᠁ Those who wear them should bear in mind that it will require their most strenuous exertions … to make all things O.K.”
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