A sweetheart is someone you have strong feelings for, usually romantically or affectionately.
When we call someone our sweetheart, it's often because we care about them deeply and might even consider them like a partner or close friend. We can use this term with family members too - for example, we might say 'grandma' or 'sister' is our sweetheart when talking about how much we love and appreciate them.
A person who is always very kind.
Example: She is such a sweetheart: she never complains about me being late.
