ματαιόφρων

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

Source
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Full diacritics: μᾰταιόφρων Medium diacritics: ματαιόφρων Low diacritics: ματαιόφρων Capitals: ΜΑΤΑΙΟΦΡΩΝ
Transliteration A: mataióphrōn Transliteration B: mataiophrōn Transliteration C: mataiofron Beta Code: mataio/frwn

English (LSJ)

ὁ, ἡ, gen. φρονος, weak-minded, LXX 3 Ma.6.11, Adam.2.24.

Greek (Liddell-Scott)

μᾰταιόφρων: ὁ, ἡ, ὁ μάταια, ἀνόητα φρονῶν, ἄφρων, ἀνόητος, Ἑβδ. (Γ΄ Μακκ. ϛʹ, 11), Κλήμ. Ἀλ. 18.

Greek Monolingual

ματαιόφρων, -ον)
αυτός που σκέφτεται μάταια και ανόητα, άμυαλος, απερίσκεπτος.
[ΕΤΥΜΟΛ. < μάταιος + -φρων (< φρην, φρενός)].

German (Pape)

ον, törichtes, eitles Sinnes, Clem.Al., LXX. und andere Spätere