a person with whom someone is having a romantic or sexual relationship:the pair were childhood sweethearts
used as a term of endearment or affectionate form of address:don’t worry, sweetheart, I’ve got it all worked out
a particularly lovable or pleasing person or thing:he is an absolute sweetheart
[as modifier] informal denoting an arrangement reached privately by two sides, especially an employer and a trade union, in their own interests:he cut a sweetheart deal with a politically well-placed union to get their endorsement in his re-election campaign
sweetheart in other Oxford dictionaries
Definition of sweetheart in the US English dictionary
