The most common and most likely answer to this crossword clue is the 6 plus 2 letter word DRINKS IN
I've seen this crossword clue in Financial Times
D
R
I
N
K
S
I
N
More clues leading to the result DRINKS IN
Buddy explains!
The straight part
We know that "Absorbs with interest/what all across answers here have" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case absorbs with interest/what all across answers here have = drinks in.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.