| yack (!) | Exclam. An exclamation of disgust. A variation on 'yuck!'. Verb. To talk incessantly and boringly. Also spelt yak and often extended to yack on, meaning the same. |
| yack (up) | Verb. To vomit. E.g."That was the worst meal ever; I feel like yacking up." |
| yacky | Adj. Disgusting, vile. |
| yam | Noun. Home. Also 'yem'. [North-east /Cumbrian use. Dialect?] |
| yampy | Adj. Crazy, mad, insane. [Birmingham /W. Midlands use] |
| yam yam | Noun. A person from the Black Country, an area of England encompassing Wolverhampton, Dudley, and Stourbridge. From the way in which people from this locality speak. Derog. [Birmingham use] |
| yank | Noun. An act of masturbation. Male usage. E.g."Oh God! I just walked in on Martin having a yank." Verb. To masturbate. E.g."He looks like he's been up all night yanking." |
| yank someone's chain | Vrb Phrs. To irritate someone, to annoy someone. E.g."If he keeps yanking my chain for much longer I'll ask him to leave." [Orig. U.S.] {Informal} |
| yap | Verb. To talk incessantly. {Informal} |
| yard | Noun. One's home. [London use] |
| yardie | Noun. A member of a Jamaican criminal gang. Usually operating internationally and in the distribution of illicit drugs. [Orig. Jamaica] |
| ya wank | Noun. A contemptible person. [Scottish use] |
| yawn | Noun. Something that is very boring. E.g."Amanda's boyfriend is obsessed with football, he's such a yawn." {Informal} |
| y-bone steak | Noun. The female genitals. |
| yellow | Adj. Cowardly or afraid. {Informal} |
| yellow belly | Noun. 1. A person from Lincolnshire. 2. A coward. (Orig. U.S.) |
| yem | Noun. See 'yam'. |
| yikes! | Exclam. An expression of surprise or astonishment. |
| (the) yips | Noun. A state of nervousness or inability to reach the usual level of skill expected of a person in a sport, typically heard with respect to the games of golf and darts. {Informal} |
| yitney | Noun. A coward. Also yitni. [Notts. & Leics. use/Dialect?] |
| yo! | Exclam. A greeting or an attention seeking call. [Orig. U.S.] |
| yob | Noun. A lout or hooligan. Derived from the backslang of boy. |
| yobbo | Noun. Meaning the same as 'yob'. |
| yomp | Verb. To walk hard and with vigour. E.g."We yomped up the valley and made it to the station just in time to catch our train." [1900s] |
| yonks | Noun. An age, a long time. |
| you lot | Phrs. Used to address a group of people. E.g."Will you lot please tidy up the kitchen, it's a mess in here." {Informal} |
| you're having a laugh (!) | Phrs./Exclam. See 'having a laugh'. |
| you're on! | Exclam. Said to express acceptance to a challenge or bet. E.g."You think you can beat me running over a 100 metres? You're on!" {Informal} |
| your mum! | Exclam. A general insult, used as an angry or disagreeable response to another's comment. |
| yoursen | Pron. Yourself. [Northern use/Dialect] |
| you what? | Exclam. Expressed to indicate that you either don't believe what someone's said, misheard, or didn't hear them. |
| yo-yo knickers | Noun. A promiscuous woman, a sexually loose woman. From the frequency of her underwear going up and down. Derog. |
| yuck (!) | Noun. A thing that is vile or distasteful. E.g."Don't eat that, it's yuck and tastes mouldy." Exclam. Expressing extreme distaste. |
| yucky | Adj. Very unpleasant or distasteful. |
| yummy mummy | Noun. A young, attractive mother. {Informal} |
| yuppie | Noun. A young urban professional, taken from the initial letters plus the suffix ie. Also possibly from young upwardly mobile professional (or person) plus the suffix ie. Cf. 'buppie'. {Informal} |