all bark and no bite

Translations
громкие слова и никакого действия
He talks tough, but he's all bark and no bite.
Он много говорит, но ничего не делает.
Definitions
Describes someone who talks tough or threatens action but does not follow through or is not actually dangerous.
Words
all

article or possessive pronoun
один только
bark

noun
лай
and

conjunction
и
no

article or possessive pronoun
никакой
bite

noun
укус