Quick Definition
I cut to the quick
Strong's Definition
to saw asunder, i.e. (figuratively) to exasperate
Derivation: from G1223 (διά) and the base of G4249 (πρίζω);
KJV Usage: cut (to the heart)
Thayer's Greek Lexicon
διαπρίω: imperfect passive διεπριομην; to saw asuuder or in twain, to divide by a saw: 1Ch_20:3; Plato, conv., p. 193 a.; Aristophanes eqq. 768, and elsewhere. Passive tropically, to be sawn through mentally, i. e. to be rent with vexation (A. V. cut to the heart), Act_5:33; with the addition ταῖς καρδίαις αὐτῶν, Act_7:54 (cf. Luk_2:35); μεγάλως ἐχαλεπαινον καί διεπρίοντο καθ' ἡμῶν, Eusebius, h. e. 5, 1, 6 (15, Heinich. edition; cf. Gataker, Advers. misc. col. 916 g.).
Mounce Concise Greek Dictionary
διαπρίω diapriō 2x
to divide with a saw, saw asunder; to grate the teeth in a rage; pass. met. to be cut to the heart, to be enraged, Act_5:33 ; Act_7:54
Abbott-Smith Greek Lexicon
δια -πρίω ,
[in LXX : 1Ch_20:3 ( H5493 ) * ;]
to saw asunder. Pass ., metaph . (vernacular ?), EV , cut to the heart: Act_5:33 ; seq . τ . καρδίαις αὐτῶν , Act_7:54 .†
Moulton & Milligan — Vocabulary of the Greek NT
διαπρίω [page 153]
The literal sense of this word is seen in Syll 587 .160, .304 (B.C. 329 8), Michel 594 .107 (B.C. 279) ξύλον διαπρίσαντι Θεοδήμωι . For the subst. cf. the Delphic inscr. in BCH xxvi. p. 92 .8 ξύλων [Μ ]ακεδον [ικῶν με ]σόδμᾶν διαπρίωσ [ιος : Herwerden compares διαπρίωτος in Hippocrates.
Liddell-Scott — Intermediate Greek Lexicon
διαπρίω fut. -πριου^μαι "to saw quite through, saw asunder", Ar. :—metaph., διεπρίοντο ταῖς καρδίαις "were cut" to the heart, NTest. δ. τοὺς ὀδόντας "to gnash" the teeth, Luc.
STEPBible — Tyndale Abridged Greek Lexicon
δια-πρίω
[in LXX: 1Ch.20:3 (סוּר) * ;]
to saw asunder. Pass., metaphorically (vernacular?), EV, cut to the heart: Act.5:33; before τ. καρδίαις αὐτῶν, Act.7:54.†
(AS)