mindmap root((肮脏)) dirty emphasizes the presence of dirt more than an emotional reaction to it: children ~ from play; or stresses meanness or despicableness: a ~ little secret. filthy carries a strong suggestion of offensiveness and of gradually accumulated dirt that begrimes and besmears: a stained greasy floor, utterly ~; or extreme obscenity: ~ language. foul implies extreme offensiveness and an accumulation of what is rotten and stinking: a ~-smelling open sewer; or disgusting obscenity or loathsome behavior: a record of ~ deeds. nasty applies to what is actually foul or is repugnant to one used to or expecting freshness, cleanliness, or sweetness: it's a ~ job to clean up after a sick cat; although in practice it is often no more than a synonym of unpleasant or disagreeable: his answer gave her a ~ shock. squalid adds to the idea of dirtiness and filth that of slovenly neglect: living in ~ poverty; or sordid baseness and dirtiness: had a series of ~ affairs.