someone else

Not you either

Someone else refers to a different person, any person other than the one being discussed or the speaker: I thought you were someone else, Let someone else handle it.

The phrase often implies substitution or alternative: She's seeing someone else now.

It can suggest anonymity or vagueness about identity: Someone else must have left this here.

Related

replacement · surrogate · rival · doppelgänger · not me · others · friend · alter ego · non-self · alternative · counterpart · different · presence · foreign · unfamiliar · duplicate · intruder · stand-in

Opposites
identity/self-reference

someone elseyourself

Reflexive second person

oneself · myself · me · you · himself

Family

some, someone, elsewhere, else, somebody, oneself, someone's

Familiarity
Top 2,000
Profile
Known to kids · Used worldwide · Timeless · Everyday, not technical · Rated G