The most common and most likely answer to this crossword clue is the 4 plus 3 plus 7 letter word WITH DUE RESPECT
W
I
T
H
D
U
E
R
E
S
P
E
C
T
Buddy explains!
The straight part
We know that "Humbly" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case humbly = with due respect.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.