Wiktionary
all bark and no bite
a. 1 (context idiomatic English) Full of big talk but lacking action, power, or substance; pretentious. 2 (context idiomatic English) Describes someone who often says cutting remarks, but actually has a soft personality underneath. alt. 1 (context idiomatic English) Full of big talk but lacking action, power, or substance; pretentious. 2 (context idiomatic English) Describes someone who often says cutting remarks, but actually has a soft personality underneath.