Synonyms for SOMETHING: object, entity, substance, reality, thing, being, individual, commodity; Antonyms of SOMETHING: nonentity, very, especially, extremely. Define something. something synonyms, something pronunciation, something translation, English dictionary definition of something. pron. 1. An undetermined or unspecified thing: Is something wrong? Did you buy her something for her birthday? 2. An unspecified or undetermined amount or. The meaning of SOMETHING is some indeterminate or unspecified thing. How to use something in a sentence. SOMETHING meaning: 1. an object, situation, quality, or action that is not exactly known or stated: 2. a thing for…. Learn more. Music video by The Beatles performing Something.© 2015 Calderstone Productions Limited (a division of Universal Music Group) / Apple Films Ltd. something (third-person singular simple present somethings, present participle somethinging, simple past and past participle somethinged) (colloquial) Designates an action whose name is forgotten by, unknown or unimportant to the user, e.g. from words of a song. SOMETHING definition: 1. an object, situation, quality, or action that is not exactly known or stated: 2. a thing for…. Learn more. SOMETHING definition: some thing; a certain undetermined or unspecified thing. See examples of something used in a sentence. Thing 2, also referred to as The Something, is the secondary antagonist in the 2026 animated film The Cat in the Hat. The monster is possibly an abstracted form of Thing Two. The Something was rumored to be an employee of the I.I.I.I (Institute for the Institution of Imagination and Inspiration, LLC), who invented the Go-Backer for reasons unknown. It was locked away from the institute before. Something is a song by the English rock band the Beatles from their 1969 studio album Abbey Road. It was written by George Harrison, the band's lead guitarist. Together with his second contribution to Abbey Road, Here Comes the Sun , it is widely viewed by music historians as having marked Harrison's ascendancy as a composer to the level of the Beatles' principal songwriters, John Lennon.