Plūrālia Aliēna

The follow is a list of nouns whose standard semantic meaning is altered when the noun is made plural.

• aedēs, is (f) temple —> aedēs house
• aqua, ae (f) water —> aquae mineral springs, watering hole
• auxilium, -ī (n) help —> auxilia auxiliary forces
• bonum, ī (n) a good —> bona goods, property
• carcer, -ēris (m) dungeon, prison —> carcerēs race course barriers
• castrum, -ī (n) fort —> castra military camp
• comitium, -ī (n) place of assembly —> comitia election
• cōpia (f) plenty —> cōpiae stores, troops
• fidēs, -is (f) harp-spring —> fidēs, um lyre
• fīnis, -is (m) end —> fīnēs boundaries
• fortūna, -ae (f) fortune —> fortūnae possessions
• grātia, -ae (f) favor —> grātiae thanks, the Graces
• hortus, -ī (m) garden —> hortī pleasure-grounds
• impedīmentum, -ī (n) hindrance —> impedīmenta baggage
• literra, -ae (f) letter —> litterae literature, epistle
• locus, -ī (m) place —> locī topics (but loca (n) places)
• mōs, mōris (m) habit, custom —> mōres character
• nātālis, -is (m) birthday —> nātālēs descent, origin
• opera (f) work —> operae day-hands
• ops, -is (f) help —> opēs resources, wealth
• pars, -tis (f) part —> partēs stage role, party
• rōstrum, -ī (n) beak of a ship —> rōstra speaker’s platform
• sāl (m/n) salt —> salēs (m) witty jokes
• tabella (f) tablet —> tabellae records

The Essential A & G: 107

I-Stems: Mixed I-Stems [5/8]

In my opinion, A&G make too big a fuss over mixed i-stems, which are essentially a broad class of nouns that usually feature a genitive plural in -ium and might feature an accusative plural in -īs, but are otherwise regular third declension nouns.

Here are five of their six morphological classes, along with all the examples they offer. (I’m excluding 71.4 because it’s ridiculous that they’ve placed it there at all):

1. Nouns in (n.) -ēs, (g.) -is.

• acīnacēs, -is (m.) scimitar
• aedēs, -is (f.) temple
• aciēs, -is (f.) point, battle line
• caedēs, -is (f.) slaughter
• cautēs, -is (f.) crag
• clādēs, -is (f.) destruction
• compāgēs, -is (f.) structure
• contāgēs, -is (f.) sense of touch
• famēs, -is (f.) hunger
• fēlēs, -is (f.) cat
• fidēs, -is (f.) faith, trust, loyalty, reputation, etc.
• indolēs, indolis (f.) inborn quality
• lābēs, labis (f.) fall, destruction
• luēs, luis (f.) liquid water
• mēlēs, mēlis (m/f.) marten, badger
• mōlēs, mōlis (f.) mass, bulk
• nūbēs, nūbis (m/f.) cloud
• palumbēs, palumbis (m/f.) dove
• prōlēs, prōlis (f.) shoot, offspring, descendants
• prōpāgēs, prōpāgis (f.) shoot, offspring, descendants
• pūbēs, pūbis (f.) young man
• sēdēs, sēdis (f.) seat, office
• saepēs, saepis (f.) hedge, fence
• sordēs, sordis (f.) filth
• strāges, strāgis (f.) overthrow, destruction
• struēs, struis (f.) pile
• subolēs, subolis (f.) shoot, offspring, descendants
• tābēs, tabis (f.) decline, decay
• torquēs, torquis (f.) necklace
• tudēs, tudis (m.) hammer
• vātēs, vātis (m/f.) prophet
• vehēs, vehis (f.) cart-load (quantity)
• veprēs, vepris  (m.) bramble-bush
• verrēs, verris (m.) boar
• vulpēs, vulpis (f.) fox

2. All monosyllable nominatives in -s or -x preceded by a consonant.

• ars, artis (f.) skill, art, technique
• pōns, pontis (m.) bridge
• arx, arcis (f.) fortress

3. On the following monosyllable nominatives in -s or –x preceded by a vowel.

• dōs, dōtis (f.) dowry
• fraus, fraudis (f.) deceit, fraud
• glīs, glīris (m.) dormouse
• līs, lītis (f.) case, quarrel
• mās, māris (m.) male
• mūs, mūris (m/f.) mouse
• nix, nivis (f.) snow
• nox, noctis (f.) night
• strix, strigis (f.) channel, furrow
• vīs, vis (f.) force

4. Polysyllable nominatives in -ns or -rs.

• cliēns, -entis (m.) client, follower
• cohors, -ortis (m.) companion

This does not apply to all present active participles!

5. Patrials (nouns denoting birth, class, abode) in -ās and -īs.

• Arpīnās (Arpīnātēs)… Aprīnātium
• Optimās (Optimātēs)… Optimātium
• Penās (Penātēs)… Penātium
• Quirīs (Quiṝitēs)… Quiritium

The (very much non-)Essential AG: 71-2