διάπικρος
From LSJ
Τὸ μανθάνειν δ' ἥδιστον εὖ λέγοντος, εἰ κέρδος λέγοι → It is the sweetest thing to learn from one speaking well, if they speak profitably
English (LSJ)
ον, A very bitter, ὕδωρ D.S.2.48, 19.98.
Greek (Liddell-Scott)
διάπικρος: -ον, λίαν πικρός, κατάπικρος, ὕδωρ Διόδ. 2. 48.
Spanish (DGE)
-ον completamente amargo ὕδωρ D.S.2.48, 19.98.
Russian (Dvoretsky)
διάπικρος: очень горький (ὕδωρ Diod.).