hot air
US /hɑt ɛr/
UK /hɑt ɛr/

1.
cakap kosong, bualan
empty, exaggerated, or boastful talk
:
•
His promises were just a lot of hot air.
Janji-janjinya hanyalah cakap kosong.
•
Don't listen to his hot air; he never follows through.
Jangan dengar cakap kosongnya; dia tidak pernah menunaikan janji.