New Revised Standard Version
They have venom like the venom of a serpent, like the deaf adder that stops its ear,

Contemporary English Version
Your words spread poison like the bite of a cobra

New American Bible
Their venom is like the venom of a snake, like that of a serpent stopping its ears,

Douay-Rheims Bible
Their madness is according to the likeness of a serpent: like the deaf asp that stoppeth her ears:

Their madness is according to the likeness of a serpent: like the deaf asp that stoppeth her ears:

poison

Psalm 140:3 They have sharpened their tongues like a serpent: the venom of asps is under their lips.

Ecclesiastes 10:11 If a serpent bite in silence, he is nothing better that backbiteth secretly.

Romans 3:13 Their throat is an open sepulchre: with their tongues they have dealt deceitfully. The venom of asps is under their lips.

James 3:8 But the tongue no man can tame, an unquiet evil, full of deadly poison.

like [heb.

Matthew 3:7 And seeing many of the Pharisees and Sadducees coming to his baptism, he said to them: Ye brood of vipers, who hath shewed you to flee from the wrath to come?

Matthew 23:33 You serpents, generation of vipers, how will you flee from the judgment of hell?

the deaf

Jeremiah 8:17 For behold I will send among you serpents, basilisks, against which there is no charm: and they shall bite you, saith the Lord.

adder or asp.

Job 20:14,16 His bread in his belly shall be turned into the gall of asps within him, . . .

Isaiah 11:8 And the sucking child shall play on other hole of the asp: and the weaned child shall thrust his hand into the den of the basilisk.