Cryptic crossword clue
A Catholic when uplifted will get crazy about religious rite 11

The most common and most likely answer to this crossword clue is the 11 letter word SACRAMENTAL

I've seen this crossword clue in The Times
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The straight part
We know that "about religious rite" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case about religious rite = sacramental.
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.

Crossword Answer definitions

SACRAMENTAL noun
  1. An object (such as holy water or a crucifix) or an action (such as making the sign of the cross) which is regarded as encouraging devotion and thus spiritually aiding the person who uses it.
SACRAMENTAL adjective
  1. Used in, or relating to, a sacrament.

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