Quick Definition
ὑπερπερισσεύω v. I abound exceedingly, overflow
Strong's Definition
from 5228 and 4052; to super-abound
KJV Usage: abound much more, exceeding
UBS Dictionary of the Greek New Testament
verb | περισσεύω
59.49 · Quantity · Abundance, Excess, Sparing
to be more than, to be more abundant to be more abundant than a given quantity For another interpretation of ὑπερπερισσεύω in ROM 5:20, see 78.34.
78.34 · Degree · More Than, Less Than [Comparative Degree]
extreme, extremely, to an extreme degree, to a very great degree an extraordinary degree, involving a considerable excess over what would be expected (this series differs from the series in 78.31 primarily in emphasizing the excessive degree) Though it is possible to interpret ὑπερπερισσεύω in ROM 5:20 as referring simply to quantity (see 59.49), it is better to interpret it as expressing degree. χάρις itself indicates the activity of God in showing favor, and ὑπερπερισσεύω is simply an expression of abundant degree involved in such an activity.
UBS Dictionary of the Greek New Testament © United Bible Societies, licensed CC BY-SA 4.0.
Thayer's Greek Lexicon
ὑπερ-περισσεύω: 1 aor. ὑπερεπερίσσευσα; Pres. pass. ὑπερπερισσεύομαι; (Vulg. superabundo); to abound beyond measure, abound exceedingly: Ro. v. 20; pass. (see περισσεύω, 2), to overflow, to enjoy abundantly: with a dat. of the thing, 2 Co. vii. 4. (Moschion de pass. mulier. Ρ. 6, ed. Dewez; Byzant. writ.)
Mounce Concise Greek Dictionary
ὑπερπερισσεύω hyperperisseuō 2x
to superabound; to abound still more, Rom. 5:20; mid. to be abundantly filled, overflow, 2 Cor. 7:4*
Abbott-Smith Greek Lexicon
*† ὑπερ-περισσεύω to abound more exceedingly: Ro 5:21. Mid., in same sense (RV, overflow): c. dat. rei, II Co 7:4.†
Liddell-Scott-Jones — Greek-English Lexicon
ὑπερπερισσεύω (huperperisseuō) — to abound. ὑπερπερισσ-εύω, abound much more, be in great excess, χάρις [NT]:—middle, ὑ. τῇ χαρᾷ [NT]