I. ˈsəmˌbädē, -(ˌ)bədē, -di pronoun
Etymology: Middle English sum body, from sum, som some + body
: one or some person of no certain or known identity : a person indeterminate
if you leave the door open somebody will be sure to come in
there should be somebody at the office at this hour
II. noun
: a person of position or importance
think oneself a somebody
— often used without article
the desire to be somebody is one of the strongest of human motives — American Quarterly