σωρεύω [in LXX: Pro.25:22 (חָתָה), Jdth.15:11 * ;] __(a) to heap on: with accusative before ἐπί with accusative, Rom.12:20 (LXX) (Arist., al.); __(b) to heap with: with accusative and dative, metaph., ἁμαρτίαις, 2Ti.3:6 (overwhelmed with, Field, Notes, 217) (Polyb.).† (AS)
Thayer:
1) to heap together, to heap up 2) to overwhelm one with a heap of anything 3) metaph. to load one with the consciousness of many sins
σωρεύω
sōreuō
sore-yoo'-o
From another form of G4673; to pile up (literally or figuratively)