Heart-throb is a colloquial term which usually refers to someone who is considered to be charming, charismatic and attractive. However, if someone is looking for alternatives, there are several other words to use. One such word is "crush", which implies intense feelings of attraction towards someone. Another word that is frequently used in a similar context is "hunk", which is a term to describe an attractive and physically fit person. Alternatively, "Adonis" can also be used to refer to a handsome and well-built man. "Stud" is another synonym frequently used to describe a man who is considered desirable by women. All of these words have similar meanings to heart-throb and can be used interchangeably.