What is the Latin word for herein?

The usual Latin words for “herein” are intus, intrā, ibī̆. The right choice depends on the sense; see the distinctions below.

English → Latin

“herein” in Latin

intuson the inside: within, inside; from within, from the inside, out; to the inside: within intrāwithin; inside; during; less than ibī̆in that place, there; then, thereupon

Riddle & Arnold A Copious and Critical English–Latin Lexicon, 1864

herein

in eo: hac in re: ea in re: intus: intra (within): ibi (herein; in this that has been mentioned). Herein he was wrong, etc., in eo peccavit.

Quick answer

What is the Latin word for herein?: The usual Latin words for “herein” are intus, intrā, ibī̆. The right choice depends on the sense; see the distinctions below.

Entry from J. E. Riddle & T. K. Arnold, A Copious and Critical English–Latin Lexicon (rev. C. Anthon, New York: Harper, 1864), digitised by Fergus J. P. Walsh, CC BY-SA 4.0; Latin markup adapted by latindictionary.co.