Meaning of yas in English:

yas

(also yass, yaass)

Pronunciation /jas/

exclamation

informal
  • Expressing great pleasure or excitement.

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

Origin

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