Bad language to abuse a host (5)

I believe the answer is:

oaths

I'm a little stuck... Click here to teach me more about this clue!

'bad language to' is the definition.
I can't judge whether this definition defines the answer.

'abuse a host' is the wordplay.
'abuse' indicates anagramming the letters.
'a'+'host'='ahost'
'ahost' anagrammed gives 'OATHS'.

Can you help me to learn more?

(Other definitions for oaths that I've seen before include "four-letter words" , "Expletives" , "Swearwords" , "Imprecations" , "Solemn promises or curses" .)

I've seen this clue in the Sydney Morning Herald.

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