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Quizzes > Literature & Language > Foreign Languages

Ready to Master Latin 3rd Declension Adjectives?

Dive into Latin grammar practice - ace your 3rd declension adjectives!

Difficulty: Moderate
2-5mins
Learning OutcomesCheat Sheet
Paper art illustration featuring Latin 3rd declension adjectives quiz text on a golden yellow background.

Calling all Latin learners! Ready to level up your latin 3rd declension adjectives mastery? This third declension adjective quiz offers a fun way to test your understanding of latin adjective declensions and solidify your latin grammar practice. You'll navigate masculine, feminine, and neuter forms across all cases - from nominative and genitive to dative, accusative, and ablative - building the confidence you need for advanced readings. Whether you've just aced the exercises on first declension endings or you're eager to tackle the Latin 3rd declension challenge , this quiz will push you to perfect every gender and case. Embrace the challenge now - start the quiz today and transform your translations!

What is the genitive singular form of the 3rd declension adjective 'fortis'?
fortis
fortem
fortum
forte
The genitive singular of 'fortis' is spelled 'fortis', matching the standard third declension pattern with a stem ending in -is. This form is used to show possession or close association. The word 'forte' is the neuter nominative singular form, while 'fortem' and 'fortum' are not valid forms for this adjective. Wiktionary
What is the nominative singular neuter form of the adjective 'omnis'?
omne
omnis
omnia
omnium
'Omne' is the neuter nominative singular form of the adjective 'omnis'. Third declension adjectives of this type form the neuter by adding '-e' to the stem. 'Omnis' remains for masculine/feminine, 'omnia' is the nominative plural neuter, and 'omnium' is the genitive plural. Wiktionary
Which adjective is a two-termination (masculine/feminine vs neuter) third declension adjective?
felix
fortis
ingens
acer
The adjective 'fortis' has two distinct nominative singular forms: 'fortis' for masculine/feminine and 'forte' for neuter. This makes it a two-termination third declension adjective. Adjectives like 'acer' have three different nominatives, while 'ingens' has only one form for all genders. Wiktionary
What is the genitive plural form of 'omnis'?
omnis
omnium
omnia
omnibus
'Omnium' is the genitive plural form of 'omnis'. In third declension adjectives, the genitive plural ending is typically '-um'. Other options like 'omnis' are singular forms, 'omnia' is neuter nominative plural, and 'omnibus' is dative or ablative plural. Wiktionary
What is the ablative singular form of the adjective 'acer, acris, acre'?
acris
acriter
acre
acri
The ablative singular of 'acer, acris, acre' is 'acri', following the third declension i-stem pattern. The ending '-i' marks the ablative singular for third declension adjectives. 'Acris' is genitive or feminine nominative singular, 'acre' is neuter nominative singular, and 'acriter' is an adverb formed from the adjective. Wiktionary
What is the nominative plural masculine form of 'potens, potentis'?
potentes
potenti
potent
potentia
The nominative plural masculine form of 'potens, potentis' is 'potentes'. Third declension adjectives add '-es' for masculine and feminine nominative plural. 'Potenti' is the dative or ablative singular, 'potent' is not a valid Latin form, and 'potentia' is a noun, not an adjective form. Wiktionary
What is the meaning of the adjective 'celer, celeris, celere'?
heavy
hot
cold
swift
The adjective 'celer, celeris, celere' means 'swift' or 'quick'. It describes speed and is often used in classical texts to modify nouns like 'equus' (horse). Other options like 'hot', 'cold', and 'heavy' do not match the meaning of 'celer'. Wiktionary
Which adjective forms the genitive plural 'facilium'?
felix
brevis
gravis
facilis
Adjectives like 'facilis, facile' follow the i-stem pattern, yielding the genitive plural 'facilium'. The ending '-ium' distinguishes i-stem third declension adjectives in the genitive plural. 'Gravis' forms 'graviorum', 'felix' forms 'felicium', and 'brevis' forms 'brevium' in certain contexts. Wiktionary
What is the nominative plural of the adjective 'audax, audacis'?
audacia
audacum
audacis
audaces
The nominative plural of 'audax, audacis' is 'audaces'. Third declension adjectives replace the singular ending '-x' with '-ces' for the plural. 'Audacis' is the genitive singular, 'audacum' is not a valid form, and 'audacia' is a different noun form. Wiktionary
What is the vocative plural neuter of 'brevis, breve'?
brevi
brevia
breves
breve
The neuter vocative plural matches the neuter nominative plural, giving 'brevia' for 'brevis, breve'. 'Breves' is masculine/feminine plural, 'breve' is neuter singular, and 'brevi' is dative or ablative singular. Latin neuter nouns and adjectives have identical nominative and vocative forms. Wiktionary
What is the vocative singular masculine form of 'celer, celeris, celere'?
celeri
celeris
celer
celere
The vocative singular of 'celer, celeris, celere' is identical to its nominative singular, 'celer'. Third declension vocative singular typically matches the nominative unless the noun or adjective ends in '-ius'. 'Celere' is the neuter nominative singular, 'celeris' is the genitive singular, and 'celeri' is the dative or ablative singular. Wiktionary
Choose the correct form of 'fortis' to match 'milites' in the sentence 'We praise the brave soldiers.'
fortibus
fortium
fortes
forti
The noun 'milites' is masculine nominative plural, so the adjective 'fortis' must also be in nominative masculine plural: 'fortes'. Third declension adjectives form masculine nominative plural with '-es'. 'Fortium' is genitive plural, 'forti' is dative/ablative singular, and 'fortibus' is dative/ablative plural. Wiktionary
Identify the case and number of the adjective form 'omnium'.
Genitive plural (all genders)
Dative plural feminine
Accusative singular masculine
Nominative plural neuter
'Omnium' is the genitive plural form of 'omnis', used to show possession or partitive sense for all genders. It is formed with the third declension genitive plural ending '-um'. 'Omnium' can modify masculine, feminine, or neuter nouns in the genitive plural. Other cases and numbers like nominative plural or dative singular are not marked by this form. Wiktionary
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Study Outcomes

  1. Identify Case and Gender Endings -

    Recognize the different endings for masculine, feminine, and neuter forms in the latin 3rd declension adjectives across all cases.

  2. Apply Declension Patterns -

    Correctly form and use 3rd declension adjectives Latin in sample sentences, ensuring proper noun-adjective agreement.

  3. Distinguish I-Stem Variations -

    Differentiate between i-stem and non-i-stem adjective endings to select the appropriate form.

  4. Analyze Adjective Usage -

    Examine quiz examples to spot common mistakes and understand the rules governing latin adjective declensions.

  5. Strengthen Grammar Confidence -

    Build mastery through practice questions that reinforce third declension adjective quiz concepts and boost retention.

Cheat Sheet

  1. Stem Formation -

    For Latin 3rd declension adjectives, drop the genitive singular ending "-is" from its dictionary form to reveal the stem. For example, fortis (brave) becomes fort- and brevis (short) becomes brev-. This technique is endorsed by Wheelock's Latin Grammar and standard in academic curricula.

  2. Two- vs. Three-Termination Adjectives -

    In 3rd declension adjectives Latin, two-termination types share a masculine/feminine form (e.g., brevis, breve) while three-termination types have distinct nominatives like acer, acris, acre. A quick mnemonic is "2 = M/F together, 3 = all three apart," which helps reinforce the difference. The University of Chicago's instructional materials recommend practicing both types to build rapid recognition.

  3. Core Case Endings for Masculine/Feminine/Neuter -

    When practicing Latin adjective declensions, note that masculine/feminine adjectives use nominative singular -is and plural -es, while the neuter uses -e and -ia (e.g., fortis, fortes; breve, brevia). The genitive always ends in -is for both genders, as confirmed by the Perseus Digital Library. Use a simple chart drill from reputable sources to reinforce these patterns in your mind.

  4. Identifying i-Stem Patterns -

    Some 3rd declension adjectives follow i-stem patterns, requiring a genitive plural in -ium instead of -um (e.g., facilis, facile → facil(i)um). Look for stems ending in two consonants or a long vowel, and try the mnemonic FiDSiG (Facilis, Difficilis, Similis, Dissimilis, Gracilis). The Oxford Latin Dictionary highlights these exceptions to avoid common pitfalls in Latin grammar practice.

  5. Forming Comparatives and Superlatives -

    If you're tackling a third declension adjective quiz, remember that comparatives use -ior (m/f), -ius (n) and superlatives add -issimus, -issima, -issimum (e.g., fortior, fortissimus). Watch for irregular forms like facilis → facillimus, where historical spelling conventions add a double "l." Practicing with examples from The Classical Review will help you master these endings confidently.

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