adj

• (slang) Cool; awesome; neat.

adv

• (nonstandard) To a great degree; terribly.
  ""But I've served 'im ten years, and I'm fond of 'im, and, mind you, 'e's a great man, when all's said an' done, and it's an honor to serve 'im. But 'e does try one cruel at times.""

verb

• (chiefly Australia, New Zealand) To spoil or ruin (one's chance of success)
  "What cruelled him was that Imperial Hotel contract."
• (Australia, ambitransitive) To violently provoke (a child) in the belief that this will make them more assertive.
  "Violence is apparently introduced early by the practice of "cruelling": children even in their first months are physically punished and then encouraged to seek retribution by punishing the punisher."