exercitus.
army, infantry; swarm, flock;
Meaning & usage
exercise
trouble, affliction
an exercised, disciplined body of men, an army
the assembly of the people in the Comitia Centuriata, as being a military organization
a multitude, host, swarm, flock
a troop, body of attendants
Where this word comes from
Etymology tree Proto-Indo-European *h₁éǵʰ Proto-Indo-European *-s Proto-Indo-European *h₁éǵʰs Proto-Italic *eks Latin ex Latin ex- Proto-Indo-European *h₂erk- Proto-Indo-European *-yeti Proto-Indo-European *-éyeti Proto-Indo-European *h₂orkéyeti Proto-Italic *arkeō Latin arceō Latin exerceō Proto-Indo-European *-tus Proto-Italic *-tus Latin -tus Latin exercitus From exerceō (“to occupy oneself, oversee; work at, practice, exercise”) + -tus (action noun forming suffix).
occupied, exercised, practised
vexed, harassed
vexatious, severe
disciplined
Where this word comes from
Perfect passive participle of exerceō (“to occupy oneself, oversee; work at, practice, exercise”), from ex- (“out of”) + arceō (“to ward off, protect, guard”), from Proto-Italic *arkeō, from Proto-Indo-European *h₂orké-ye-ti, from Proto-Indo-European *h₂erk- (“to protect, guard”).
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.