be all mouth and no trousers

US /bi ɔl maʊθ ænd noʊ ˈtraʊzərz/
UK /bi ɔl maʊθ ænd noʊ ˈtraʊzərz/
"be all mouth and no trousers" picture
1.

hanya omong kosong, besar mulut tapi tidak ada tindakan

to talk a lot about what you are going to do but fail to actually do it

:
He's always boasting about his plans, but he's all mouth and no trousers.
Dia selalu membual tentang rencananya, tapi dia hanya omong kosong.
Don't listen to her promises; she's all mouth and no trousers.
Jangan dengarkan janjinya; dia hanya omong kosong.