The most common and most likely answer to this crossword clue is the 8 letter word AGREEING
I've seen this crossword clue in Financial Times
A
G
R
E
E
I
N
G
More clues leading to the result AGREEING
- Getting on, accepting the conclusions of proper debate?
- One wearing green with silver trim, going well together
- Getting on, carrying on in unison
- Consenting adult? Dyke embraces a German
- OK with I is into reggae ‘n’ rum
- A timeless salutation in correspondence
- Settling on gin, eager to be drunk
- On the same wavelength — and about to be accepted by getting on
- Corresponding, wasting little time offering a welcome
- Getting on, around about, getting on
Buddy explains!

The straight part
We know that "Consenting" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case consenting = agreeing.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 AGREEING mean?
AGREEING verb- To harmonize in opinion, statement, or action; to be in unison or concord; to be or become united or consistent; to concur.
- To yield assent; to accede;—followed by to.
- To yield assent to; to approve.
- To make a stipulation by way of settling differences or determining a price; to exchange promises; to come to terms or to a common resolve; to promise.
- To be conformable; to resemble; to coincide; to correspond.
- (now always with with) To suit or be adapted in its effects; to do well.
- (grammar) To correspond to (another word) in a grammatical category, such as gender, number, case, or person.
- To consent to a contract or to an element of a contract.
- An agreement.