The most common and most likely answer to this crossword clue is the 4 letter word BRIO
B
R
I
O
More clues leading to the result BRIO
- Left-wingers on Brexit revolting in one go
- British port and spirit
- Exuberance in Brazil’s first city
- Liveliness one found in little sibling?
- Writer lowering one’s spirit
- Panache shown by writer with twisted heart
- Go independent protected by one of the family
- Life of Brian not getting an Oscar?
- Writer’s change of heart shows zest for life
- Beer’s always off — port or spirit?
Buddy explains!

The straight part
We know that "Liveliness" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case liveliness = brio.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 BRIO mean?
BRIO noun- Vigour or vivacity.