caprice

As an adjective cruel

is not nice; mean; heartless.

As a verb cruel

is to spoil or ruin (one's chance of success).

As a noun caprice is

an impulsive, seemingly unmotivated notion or action.

Happinness is likely misspelled.

Happinness has no English definition.

As a noun caprice

is an impulsive, seemingly unmotivated notion or action.

As a proper noun enigma

is a german device used during world war ii to encode strategic messages.

As a noun caprice is

an impulsive, seemingly unmotivated notion or action.

As nouns the difference between caprine and caprice

is that caprine is any of certain caprids (including sheep) that are regarded as being similar to the goat; any member of the tribe while caprice is an impulsive, seemingly unmotivated notion or action.

As an adjective caprine

is of or relating to goats.

As nouns the difference between arbitrary and caprice

is that arbitrary is anything arbitrary, such as an arithmetical value or a fee while caprice is an impulsive, seemingly unmotivated notion or action.

As an adjective arbitrary

is based on individual discretion or judgment; not based on any objective distinction, perhaps even made at random.

As nouns the difference between caprice and boutade

is that caprice is an impulsive, seemingly unmotivated notion or action while boutade is (obsolete) an outbreak; a caprice; a whim.