What is the Latin word for therein?

The usual Latin words for “therein” are egō̆, is. The right choice depends on the sense; see the distinctions below.

English → Latin

“therein” in Latin

egō̆I; first person singular personal pronoun, nominative case isthis or that man, woman or thing; he, she, it, they (previously introduced); this or that [man, woman or thing] (as a no

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

therein

(in) eo, (in) iis, plur., (in that thing, those things): eo loco (in that place). Vid: also, THERE.

Quick answer

What is the Latin word for therein?: The usual Latin words for “therein” are egō̆, is. 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.