ὑπερπερισσεύωhyperperisseúō

to abound more exceedingly: Romans 5:21.

Greek (New Testament) · G5248

Meanings

Mid., in same sense (RV, overflow): with dative of thing, 2 Corinthians 7:4.

Same root

ὑπέρhypér · G5228"over", i.e. (with the genitive case) of place, above, beyond, across, or causal, for the sake of, instead, regarding; with the accusative case superior to, more than
περισσεύωperisseúō · G4052to superabound (in quantity or quality), be in excess, be superfluous; also (transitively) to cause to superabound or excel

Where it appears

Appears 2 times in the Bible.

Romans 5:20 God’s law was given so that all people could see how sinful they were. But as people sinned more and more, God’s wonderful grace became more abundant.
2 Corinthians 7:4 I have the highest confidence in you, and I take great pride in you. You have greatly encouraged me and made me happy despite all our troubles.

Source: G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922), public domain.