I. adjective Date: 13th century not like: as, marked by lack of resemblance ; different , marked by inequality ; unequal , ~ness noun II. preposition Date: circa 1592 not like: as, different from , not characteristic of , in a different manner from , III. conjunction Date: 1949 in a manner that is different than ; not as, Usage: The use of ~ as a conjunction is less common than conjunctive use of like and, while criticized, is not as frequently cited as an error. The conjuctive ~ almost always introduces a prepositional phrase . In spite of criticism, this conjunctive use of ~ is well established in both American and British English.
UNLIKE
Meaning of UNLIKE in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012