LATIN DICTIONARYLexicon Latīnum
English → Latin

“fortify” in Latin

The English word fortify itself goes back to Latin fortis, through fortificō.

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

fortify
Defend a place by works, munire: communire: praemunire (by any sort of visible protection, as walls, ditches, palisades, etc.): operibus munire; munitionibus firmare (by works, fortifications, etc.): muris munire: moenibus sepire (by surrounding with walls): castellis sepire (by citadels, redoubts, etc.): vallo et fossa circumdare locum: vallum et fossam circumdare loco (by palisades and ditches; e.g., a camp). A fortified town, urbs munita: oppidum munitum: fortified by nature, loci natura munitus; naturaliter munitus; situ naturali munitus: fortified both by art and nature, et natura loci et manu or operibus et loco munitus; cum manu munitus, tum natura loci: nature has fortified Italy by its Alps, Alpibus muniit Italiam natura.
Strengthen, confirm, Vid.

Quick answer

What is the Latin word for fortify?
The usual Latin words for “fortify” are mūniō, commūniō, praemūniō. 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.