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1 adjective
filth‧y1 S3 comparative filthier, superlative filthiest
1 very dirty:
The house was filthy, with clothes and newspapers strewn everywhere.
2 showing or describing sexual acts in a very rude or offensive way
Your problem is you've got a filthy mind (=you are always thinking about sex).
3 showing anger or annoyance
filthy mood/temper
Simon had been drinking and was in a filthy temper.
She gave him a filthy look.

filthy weather/night/day

the weather, a night etc that is very cold and wet:
It's a filthy night to be out.
similar words: filthy, grubby, grimy, mucky British English, muddy, greasy, dusty, soiled, contaminated, polluted

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