'enter' vs 'enter for'? I have an old English book which says that 'enter' can only mean 'go into' whereas 'enter for' means 'take part in'; however, I found some examples in the dictionary which suggests to me that they seem to have little in difference: enter something: 1 000 children entered the competition. enter (for something): Only four British players have entered for the championship. (http://www.oxfordlearnersdictionaries.com/us/definition/english/enter) So, is there any difference between 'enter' and 'enter for'(maybe in collocation)? Can they be used interchangeably? Thanks!