cruel
Pronunciation: /krʊəl/
adjective ( crueller, cruellest; US crueler, cruelest)
verb ( cruels, cruelling, cruelled)
- spoil or ruin (an opportunity or a chance of success): Ernie nearly cruelled the whole thing by laughing[ late 19th century: perhaps influenced by the idiom queer someone's pitch (see queer)]

Phrases
-
be cruel to be kind
- act towards someone in a way which seems harsh but will ultimately be of benefit to them: George did not like being firm with Lennie but he knew that he had to be cruel to be kind
-
cruel and unusual punishment
- a category of excessively severe punishment banned under the Eighth Amendment of the US Constitution (and originally under the English Bill of Rights): this is an important case that confronts the issue of what constitutes cruel and unusual punishment

Origin:
Middle English: via Old French from Latin crudelis, related to crudus (see crude)

Spelling rule
Double the l when adding endings which begin with a vowel to words which end in a vowel plus l: