A person or team that has reached a certain stage in a competition, often by winning a preliminary round. The team was thrilled to be the only qualifier from their region to advance to the finals.
A word or phrase, especially an adjective, used to attribute a quality to another word, typically a noun. In the sentence 'She is a very talented musician,' the word 'very' is a qualifier.
A preliminary competition or test that determines who is eligible to participate in a subsequent or final event. The marathon qualifier will take place next month to determine who can compete in the main event.