"truly" (akin to aletheia, "truth"), is translated "verily" in 1 John 2:5 . See INDEED , No. 3, SURELY, TRULY.
the transliteration of a Heb. word = "truth," is usually translated "verily" in the four Gospels; in John's Gospel the Lord introduces a solemn pronouncement by the repeated word "verily, verily" twenty-five times. See AMEN.
"really" (connected with eimi, "to be"), is rendered "verily" in Mark 11:32 , RV, and Galatians 3:21 . See INDEED , No. 4.
Notes: (1) In Acts 16:37 , gar, "for," is translated "verily." (2) In Hebrews 2:16 , depou (in some texts de pou), a particle meaning "of course, we know," is rendered "verily." (3) In Luke 11:51 , AV, nai, "yea" (RV), is translated "verily." (4) The particle men (see INDEED , No. 1) is rendered "verily," e.g., in 1 Corinthians 5:3; 14:17; Hebrews 12:10; in the AV, Hebrews 3:5; 7:5,18; 1 Peter 1:20; in Acts 26:9 it is combined with oun ("therefore"): see YEA , No. 4.