THIRD DECLENSION istem

1
THIRD DECLENSION i-stem

• SAME NUMBER OF SYLLABLES
• OR
• BASE ENDS IN TWO CONSONANTS

2
3rd i-stem MASCULINEsame of syllables

• hostis hostis m 3-i enemy
• ignis ignis m 3-i fire
• panis panis m 3-i bread
• imber imbris m 3-i rainstorm
• amnis amnis m 3-i river

3
3rd i-stem FEMININEsame of syllables

• navis navis f 3-i ship
• vis vis f 3-i force, pl. strength
• avis avis f 3-i bird
• vestis vestis f 3-i clothing, garment
• caedes caedis f 3-i murder
• aedes aedis f 3-i temple pl. house
• sedes sedis f 3-i seat pl. residence

4
3rd i-stem MASCULINE/FEMININE same of syllables
civis civis m/f 3-i citizen anguis anguis m/f 3-
i snake
5
3rd i-stem MASCULINEbase ends in 2 consonants

• mons montis m 3-i mountain, hill

6
3rd i-stem FEMININEbase ends in 2 consonants

• ars artis f 3-i art
• arx arcis f 3-i citadel, castle
• nox noctis f 3-i night
• pars partis f 3-i part, role
• urbs urbis f 3-i city
• mors mortis f 3-i death
• gens gentis f 3-i family, nation
• mens mentis f 3-i mind

7
3rd i-stem MASCULINE/FEMININEbase ends in 2
consonants

• parens parentis m/f 3-i parent

8
3rd i-stem NEUTER
mare maris n 3-i sea animal animalis
n 3-i animal milia milium n
3-i thousands
9
I-STEM ENDINGS

• MASCULINE/FEMININE NEUTER
• NOM ----- ES ----- IA
• GEN IS IUM IS IUM
• DAT I IBUS I IBUS
• ACC EM ES IS ----- IA
• ABL E(I) IBUS I IBUS
• VOC ----- ES ----- IA

10
CAVEATSi.e. NOT i-stem

• pater patris m 3 father
• frater fratris m 3 brother
• mater matris f 3 mother
• senex senis m 3 old man
• iuvenis iuvenis m 3 youth
• adolescens adolescentis m 3 young man
• canis canis m/f 3 dog
• mensis mensis m 3 month