be all talk (and no action)

US /bi ɔl tɔk (ænd noʊ ˈækʃən)/
UK /bi ɔl tɔk (ænd noʊ ˈækʃən)/
"be all talk (and no action)" picture
1.

hanya omong kosong dan tidak ada tindakan, banyak bicara, sedikit bekerja

to talk a lot about what you are going to do but never do it

:
He promised to help me move, but he's all talk and no action.
Dia berjanji akan membantuku pindahan, tapi dia hanya omong kosong dan tidak ada tindakan.
Don't trust him; he's all talk and no action when it comes to getting things done.
Jangan percaya padanya; dia hanya omong kosong dan tidak ada tindakan dalam hal menyelesaikan sesuatu.