The most common and most likely answer to this crossword clue is the 7 letter word SMARTEN
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More clues leading to the result SMARTEN
Buddy explains!
The straight part
We know that "groom" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case groom = smarten.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 SMARTEN mean?
SMARTEN verb- To make smarter in appearance; to refurbish or spruce up.
- To increase the speed of (one's travel on foot, etc.).
- To augment with computer technology.