a : offensive in language also know as lewdly or profanely indecent
— vul·gar·ly adverb 
Vulgar language which contains different terms of profanity, insults, swear words or desecrating manners which can cause unclean thinking.

Vulgar: That which stimulates the primitive part of the brain. The corrupting of good morals via the art speaking vulgar, foul or profanity.

Vulgar language which contains different terms of profanity, insults, swear words which can cause unclean thinking, desecration or unclean thoughts.

Using vulgar language or profanity was forbidden in the bible due to it’s negative influence and the negative mental side effects it causes over the human brain (dopamine, limbic system and subconscious).

The Utterance of Vulgar words stimulates unclean thoughts and negative ideas that leads to an immoral way of living and thinking.
b : morally crude, undeveloped, or unregenerate : gross.
Vulgar langauge or words posses the influence that can stimulate or arouse the animalistic part of the human soul.

<I will not tolerate such vulgar language in my home>.