The most common and most likely answer to this crossword clue is the 8 letter word ANAPHORA
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More clues leading to the result ANAPHORA
Buddy explains!

The straight part
We know that "deliberate repetition of a word?" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case deliberate repetition of a word? = anaphora.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does ANAPHORA mean?
ANAPHORA noun- An expression referring to another expression. In stricter uses, an expression referring to something earlier in the discourse or, even more strictly, only reflexive and reciprocal pronouns.
- The repetition of a phrase at the beginning of phrases, sentences, or verses, used for emphasis.
- An expression that can refer to virtually any referent, the specific referent being defined by context.
- An expression that refers to a preceding expression.
- The most solemn part of the Divine Liturgy or the Mass during which the offerings of bread and wine are consecrated as body and blood of Christ