A person who turns up at parties without being invited to them:

A person who is expected to lose in a competition with someone else, or a weaker person who is always treated badly by others:

A very nice, dependable person:

A person who has greater capabilities than he/she shows or than people are aware of:

Someone who cannot stop talking:

A person who offers tickets that are in short supply for sale for a price higher than usual:

Someone who informs the police about the people concerned in a crime. This person is often a criminal himself/herself: 

Someone in a low-ranking position who has to do all the boring jobs that no one else wants to do

A person from whom it is easy to get what one wants, for example money, because he/she is kind or easily deceived:

A person who discourages or prevents others from enjoying themselves by being boring and negative towards everything:

A person who is very inquisitive about other people's affairs:

Someone who continues to work when his/her fellow-workers are on strike:

Someone who makes people work very hard:

A person with modern ideas who works with energy and enthusiasm and achieves great success in his or her job while still young:

A person who annoys others by claiming to know everything and trying to sound clever:

A person who is always taking money and things off other people, usually by taking advantage of their generosity or weakness:

A woman whose husband is away for a period of time:

A person who is weak or a failure in some way and has to be helped by others:

A person who is used as a subject in medical or other experiments:

A person with a kind and generous nature, but whose outward appearance or manner is rather rough:

A person who dislikes spending or giving money:

A person who is not used to the sea or ships:

A woman who is unlikely ever to get married:

A man who annoys women by following them slowly in a car when they are walking along the street:

A person who works inside an organisation for a long time in order to provide secret information for the enemy:

A person who buys and sells stolen goods:

Someone who studies very hard especially when trying to get good examination results:

A very important or influential person:

A person who is very good at something:

Someone who refuses to change his/her ideas and opinions (usually political ones):