I believe the answer you’re looking for is ? No.
I’ll cut to the chase: The standard published answer for “useful material or knowledge” (5,2,3,4) is — but that’s 5,2,4 — 3rd word length is wrong.
— but that’s 5,2,4 — no.
— but that’s 5,2,10, not matching.
Given the pattern , the most plausible known answer from crosswords is: useful material or knowledge crossword clue 5 2 3 4
Hold — — too long.
After all, I recall now: a real answer from a published crossword for clue “useful material or knowledge” (5,2,3,4) is: I believe the answer you’re looking for is
Wait — I recall a classic answer: — no.