Matthew 24:12πληθυνθῆναι
Because of the multiplication of wickedness, the love of most will grow cold.
Acts 6:1πληθυνόντων
In those days when the disciples were increasing in number, the Grecian Jews among them began to grumble against the Hebraic Jews because their widows were being overlooked in the daily distribution of food.
2 Corinthians 9:10πληθυνεῖ
Now He who supplies seed to the sower and bread for food will supply and multiply your store of seed and will increase the harvest of your righteousness.
Hebrews 6:14πληθύνων
saying, “I will surely bless you and multiply your descendants.”
1 Peter 1:2πληθυνθείη¶
according to the foreknowledge of God the Father and sanctified by the Spirit for obedience to Jesus Christ and sprinkling by His blood: Grace and peace be yours in abundance.
2 Peter 1:2πληθυνθείη
Grace and peace be multiplied to you through the knowledge of God and of Jesus our Lord.

Abbott-Smith

πληθύνω
(causal of πληθύω, to be full, πληθύς, Ion. for πλῆθος), [in LXX chiefly for רָבָה hi. ;]

1. trans., to increase, multiply: 2Co.9:10 6:14" (LXX) ; pass., to be increased, to multiply: Mat.24:12, Act.6:7 7:17 9:31 12:24; with dative of person(s) (Dan LXX TH 3:31(98) al.), 1Pe.1:2, 2Pe.1:2, Ju 2.

2. Intrans., to be increased, to multiply: Act.6:1.†
(AS)

Sources: Abbott-Smith’s Manual Greek Lexicon of the New Testament (1922, public domain) and glosses from STEPBible TBESG (CC BY 4.0); STEPBible TAGNT (Greek New Testament, CC BY 4.0); the Berean Standard Bible (public domain). Reformatted by Word Study, wording unchanged. All sources and licenses.