prevaricate
From LSJ
οὐκ ἂν λάβοις παρὰ τοῦ μὴ ἔχοντος → you can't take from one who doesn't have, you can't squeeze blood out of a turnip, you can't get blood out of a turnip, you can't get blood from a stone, you can't get blood out of a stone
English > Greek (Woodhouse)
verb intransitive
P. and V. ὑποστέλλεσθαι; (Eur., Orestes 607), P. διακρούεσθαι, Ar. and P. στρέφεσθαι.