Definition of yas in English:

yas

exclamation

(also yass)
informal
  • Expressing great pleasure or excitement.

    • ‘Yas! Now this is truly punk rock!’
    • ‘free wine and cheese and candy, yass’

Pronunciation

yas

/yas/ /jæs/

Origin

Mid 19th century (originally in representations of a regional pronunciation of ‘yes’): representing an informal or exaggerated pronunciation of yes.