You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For simplicity, answers should be in all lower cased letters.
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Question: Category: MR. T 
Clue: In 1975 he was named the first black Anglican dean of Johannesburg

Answer: desmond tutu


Question: Category: CLOTHING 
Clue: They can be crew, knee, or bobby

Answer: socks


Question: Category: THE DICTIONARY 
Clue: Dictionaries use archaic for rare usages; this label refers to a sense of a word no longer in use, like "guess" for "aim"

Answer:
obsolete