The most common and most likely answer to this crossword clue is the 6 letter word TABLED
I've seen this crossword clue in The Daily Telegraph
T
A
B
L
E
D
Buddy explains!
The straight part
We know that "Proposed" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case proposed = tabled.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 TABLED mean?
TABLED verb- To tabulate; to put into a table or grid.
- To supply (a guest, client etc.) with food at a table; to feed.
- To delineate; to represent, as in a picture; to depict.
- (non-US) To put on the table of a commission or legislative assembly; to propose for formal discussion or consideration, to put on the agenda.
- To remove from the agenda, to postpone dealing with; to shelve (to indefinitely postpone consideration or discussion of something).
- To join (pieces of timber) together using coaks.
- To put on a table.
- To make board hems in the skirts and bottoms of (sails) in order to strengthen them in the part attached to the bolt-rope.