turn on

== English == === Pronunciation === === Verb === turn on (third-person singular simple present turns on, present participle turning on, simple past and past participle turned on) (transitive) To set a flow of fluid or gas running by rotating a tap or valve. [from 19th c.] (transitive) To power up, to put into operation, to start, to activate (an appliance, light, mechanism, functionality etc.). (intransitive, of a device) To start operating; to power up, to become on. [from 19th c.] (transitive) To introduce (someone to something), and especially to fill them with enthusiasm (about it); to intoxicate, give pleasure to ( + to an object of interest or excitement). [from 20th c.] (transitive) To sexually arouse. [from 20th c.] (intransitive, slang) To take drugs. (transitive, slang) To cause to take up drugs, especially hallucinogens. (transitive) To aim at. (transitive) To rebel against; to suddenly attack. [from 19th c.] (ditransitive) To cause (someone) to rebel against or suddenly attack (someone else). (intransitive) To depend upon; to pivot around, to have as a central subject. [from 17th c.] ==== Usage notes ==== In senses 1–7, turn on is a phrasal verb with on functioning as an adverbial particle. If the sense is transitive and the object is a noun, the particle on may feature before or after the noun. If the object is a personal pronoun, then the particle on must come after it. In senses 8–11, turn on comprises the verb turn (used transitively or intransitively) and on functioning as a preposition before a noun or pronoun. ==== Synonyms ==== turn against (sense 9) ==== Antonyms ==== shut off (senses 1 to 5 inclusive) turn off (senses 1 to 5 inclusive + sense 10) ==== Coordinate terms ==== keep on (senses 1 to 4 inclusive) leave on (senses 1 to 4 inclusive) ==== Derived terms ==== ==== Translations ==== === Anagrams === Runton, untorn