The most common and most likely answer to this crossword clue is the 6 letter word FLATLY
F
L
A
T
L
Y
Buddy explains!
The straight part
We know that "Outright" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case outright = flatly.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 FLATLY mean?
FLATLY adverb- In a physically flat or level manner.
- In a definite manner; in a manner showing complete certainty.
- In a manner that shows no emotion.