OK

Ⅰ.

OK [1] (also okay) informal ► EXCLAMATION 1) expressing agreement or acquiescence. 2) introducing an utterance.

► ADJECTIVE 1) satisfactory, but not especially good. 2) permissible.

► ADVERB ▪ in a satisfactory manner or to a satisfactory extent.

► NOUN ▪ an authorization or approval.

► VERB (OK's, OK'd, OK'ing) ▪ give approval to.

ORIGIN probably an abbreviation of orl korrect, humorous form of all correct, popularized as a slogan during President Van Buren's re-election campaign of 1840 in the US; his nickname Old Kinderhook (derived from his birthplace) provided the initials.

Ⅱ.

OK [2] ► ABBREVIATION ▪ Oklahoma.