LATIN DICTIONARYLexicon Latīnum
English → Latin

“adjoin” in Latin

The English word adjoin itself goes back to Latin iungō, through adiungō.

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

adjoin
transitive,
addere, adjungere, ad-, sub-jicere (aliquid alicui rei or ad aliquid: subjicere only alicui rei). SYN. in ADD, intransitive.
To be adjacent to; of countries. Vid: ADJACENT.
Of buildings, continuari alicui loco (to join it).

Quick answer

What is the Latin word for adjoin?
The usual Latin words for “adjoin” are addō, adiungō, ad-. 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.