yaya adjective 1noun 1verb 1forms 3 adjective1 •(Singlish) Arrogant, stuck-up. noun1 •(Philippines, Hong-Kong) A nanny; female caregiver; nursemaid“Can you not make this carriage move faster? You're moving slower than when my yaya tried to ride a snail to the next village.” — 2020 verb1 •(Singlish) To show off or behave in an egocentric or self-important manner. formsyayas · more yaya · most yaya