The most common and most likely answer to this crossword clue is the 6 letter word FEISTY
F
E
I
S
T
Y
More clues leading to the result FEISTY
- Lively female that is upset over squalid accommodation
- Plucky one locked in iron enclosure
- Spirited female is yet to be beaten
- Spirited and fit? Yes, possibly
- Fit? Yes! Possibly spirited
- Plucky fellow is yet to be beaten
- Tough as iron facing one’s gutless temerity
- Lively one kept in iron pen
- Irritable and eccentric, keeping one stumped
- With drug in hand, youth leader is spirited
Buddy explains!

The straight part
We know that "Vivacious" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case vivacious = feisty.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 FEISTY mean?
FEISTY adjective- Tenacious, energetic, spunky.
- Belligerent; prepared to stand and fight, especially in spite of relatively small stature or some other disadvantage.
- Easily offended and ready to bicker.