The most common and most likely answer to this crossword clue is the 8 letter word CLEANEST
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Buddy explains!
The straight part
We know that "most perfect" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case most perfect = cleanest.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 CLEANEST mean?
CLEANEST verb- To remove dirt from a place or object.
- To tidy up, make a place neat.
- To remove equipment from a climbing route after it was previously lead climbed.
- To make things clean in general.
- To remove unnecessary files, etc. from (a directory, etc.).
- To brush the ice lightly in front of a moving rock to remove any debris and ensure a correct line; less vigorous than a sweep.
- To purge a raw of any blemishes caused by the scanning process such as brown tinting and poor color contrast.
- To remove guts and/or scales of a butchered animal.
- (heading, physical) Free of dirt or impurities or protruberances.
- (heading, behavioural) Free of immorality or criminality.
- Smooth, exact, and performed well
- Total; utter. (still in "clean sweep")
- Cool or neat.
- (health) Being free of sexually transmitted diseases (STDs).
- That does not damage the environment.
- Free from that which is useless or injurious; without defects.
- Free from restraint or neglect; complete; entire.
- Well-proportioned; shapely.
- (of a route) Ascended without falling.