nastiest

Adjective

nasty (comparative nastier, superlative nastiest)

1. (US) Dirty, filthy.
   • In such condition, there is no place for Industry; because the fruit thereof is uncertain: and consequently no Culture of the Earth; no Navigation, nor use of the commodities that may be imported by Sea; no commodious Building; no Instruments of moving, and removing such things as require much...1651, Thomas Hobbes, Leviathan
2. Contemptible, unpleasant (of a person).
   • Jonathan kept staring at him, till I was afraid he would notice. I feared he might take it ill, he looked so fierce and nasty.1897, Bram Stoker, Dracula, Westminster [London]: Archibald Constable and Company, […], →OCLC
3. Objectionable, unpleasant (of a thing); repellent, offensive.
   • ‘It's a nasty trade,’ said Mr. Limbkins, when Gamfield had again stated his wish.1838, Boz [pseudonym; Charles Dickens], Oliver Twist; […], volume (please specify |volume=I, II, or III), London: Richard Bentley, […], →OCLC
4. Indecent or offensive; obscene, lewd.
   • He said to Mr. Tallboy he thought the headline was a bit hot. And Mr. Tallboy said he had a nasty mind.1933, Dorothy L Sayers, Murder Must Advertise
5. Spiteful, unkind.
   • She had said: "I love the block button on Twitter. I don't know how people expect to send a nasty comment and not get blocked."2012 June 3, The Guardian

   Synonyms:

   inhuman, ruthless, sadistic, barbarous, bowelless, brutal, compassionless, cruel, flagitious, demonic

6. (UK) Awkward, difficult to navigate; dangerous.
   • There was a nasty period during the First World War when the family's allegiance was called into question - not least because one of the Schroders had been made a baron by the Kaiser.2007 August 5, The Observer

See all 13 meanings of nasty