Singular / Masculine of Ille, illa, illud (that/those)
What is ille, illius, illi, illium, illo
100
If a Neuter 3rd Declension Noun has a nominative form that ends in -al, -ar, or -men, then it is an I-stem. This rule only applies to Neuter Nouns
What is Neuter in -al, -ar, or -men Rule
200
audeo, audere, ausus sum
What is to dare
200
laus, laudis
What is praise, glory, fame
200
senectus, senectutis
What is old age
200
Feminine / Plural form of hic, haec, hoc (this/these)
What is hae, harum, his, has, his
200
After you find the base of the noun (by crossing off the Genitive Singular ending from the Lexical Entry), you can tell a word is an I-stem if the last two letters of the base are consonants (not vowels). This rule only applies to masculine and feminine nouns.
What is Base in Two Consonants Rule
300
virgo, virginis
What is maiden
300
tamen
What is nevertheless, still
300
capio, capere, cepi, captum
What is to take, seize, capture
300
Neuter / Singular form of Iste, ista, istud (that/those)
What is istud, istius, isti, istud, isto
300
If the first and second forms in the Lexical Entry have the same number of syllables, then the word is an I-stem. This rule only applies to Masculine and Feminine Nouns.
What is Parisyllabic Rule
400
tempus, temporis
What is time, occasion
400
duco, ducere, duxi, ductum
What is to lead, consider
400
fugio, fugere, fugi, fugiturum
What is to flee, escape, hurry away, go into exile, avoid, shun
400
Masculine / Plural form of Iste, ista, istud (that/those)
What is isti, istorum, istis, istos, istis
400
More Demonstrative:
Feminine / Singular form of Hic, haec, hoc (this/these)
What is haec, huius, huic, hanc, hac
500
mos, moris
What is habit, custom, manner, morale, character
500
dum
What is while, as long as, at the same time that
500
quoniam
What is since, in as much as
500
Neuter / Plural form of Ille, illa, illud (that/those)
What is illa, illorum, illis, illa, illis
500
More Demonstrative:
Masculine / Plural Ille, illa, illud (that/those)