From Longman Dictionary of Contemporary Englishuntidyun‧ti‧dy /ʌnˈtaɪdi/ adjective especially British English1UNTIDYnot neat syn messyan untidy deskuntidy hairHer clothes were in an untidy heap on the floor.RegisterIn American English and in everyday British English, people usually say messy rather than untidy:His room is always so messy.2UNTIDYsomeone who is untidydoes not keep their house, possessions etc neat syn messy —untidily adverb —untidiness noun [uncountable]THESAURUSplaceuntidy British English not tidy – used especially when things have not been put back in their correct placean untidy bedrooman untidy deskThe house was cramped and untidy.messy untidy or dirty. American people use this word instead of untidy. British people use this word, but it sounds less formal than untidya messy kitchenYou’ve made the table all messy.be a mess (also be in a mess British English) informal to be very untidy or dirtyThe whole house is in a mess, but I didn’t have time to clean it up.Sorry everything’s such a mess.cluttered untidy because there are too many things in a small spaceShe gazed around the cluttered kitchen.The office was cluttered with books.Her desk was too cluttered.unkempt untidy and not well-looked after – used about gardens or landunkempt lawnsThey walked into a wild and unkempt garden. an unkempt plot in the cemeterybe a pigsty/pit informal used when saying that a place is very untidy and dirty, and someone should clean itThis place is a pigsty! Clean it up.I don’t know how you can stand living in a pigsty like this.My room’s a total pit, but I’m too lazy to clean it.personuntidy British English an untidy person does not do things in a neat way, for example they leave things lying around instead of putting them back in the correct place. Also used about someone’s appearance, when they do not comb their hair, take care of their clothes etcShe was always very untidy – her clothes lay on the floor where she had dropped them.He had obviously been sleeping; his hair was untidy and his chin unshaven. messy untidy or dirty. American people use this word instead of untidy. British people use this word, but it sounds less formal than untidyYou’ve made my hair all messy.a messy eaterscruffy British Englishwearing old and untidy clothesMy parents think I look scruffy in these jeans, but I like them.She’s wearing that scruffy old sweater again.slovenly especially written untidy and lazyThe servants were old and slovenly.his slovenly appearanceThe work was done in a slow, slovenly way. bedraggled used when someone looks untidy because they have got wet or dirtyA rather bedraggled crowd waited outside in the pouring rain.The children walked along the path, looking miserable and bedraggled.dishevelled British English, disheveled American English if someone’s hair or clothes look dishevelled, they look untidy, for example because they have just been in bed or in a windy placeHer hair was uncombed and her clothes were dishevelled.a dishevelled old manThe singer was photographed looking ill and dishevelled.unkempt especially written if someone has unkempt hair or an unkempt appearance, they look untidy and have not been taking care of the way they looka rough-looking youth with long black unkempt hair The man looked tired and unkempt.slob noun [countable] informal someone who is extremely untidy but does not seem to care that they areJo’s such a slob – how can you live like that?If you keep dressing like a slob, no one’s ever going to ask you for a date.