Definitions:

1. Functions as the second person plural pronoun and is a way to address multiple individuals simultaneously. PRONOUN
   • I don't know about y'all, but I'm ready for bed.
   • Y'all should try the new restaurant downtown, it's amazing!.
2. Is a contraction of 'you all' commonly used in Southern American English and other dialects of English to address a group of people. PRONOUN
   • Y'all are invited to the party on Saturday.

Synonyms:

• all of you
• everybody
• everyone
• you all