Nina in spanish means baby...It's the slang word a boyfriend might use for his girlfriend. Your words Nina should have the accent ~ above it. like this: niÃ±a. 'Nina' means girl.
Top definition Temperamental unknown A person that can explode at any given moment, one minute everything can be super-duper and their company that of something wonderful and the next they are loathsome.
Synonym Study. 1.Disposition, temper, temperament refer to the aspects and habits of mind and emotion that one displays over a length of time. Disposition is the natural or prevailing aspect of one's mind as shown in behavior and in relationships with others: a happy disposition; a selfish disposition.