Latin study reference
Latin Principal Parts: grammar reference
Study Latin principal parts: Regular models, Common principal parts, What each part supplies. Reference tables, labeled forms, and interactive practice.
Regular models
| Present / infinitive | Perfect | Supine |
|---|---|---|
| amō · amāre | amāvī | amātum |
| moneō · monēre | monuī | monitum |
| regō · regere | rēxī | rēctum |
| capiō · capere | cēpī | captum |
| audiō · audīre | audīvī | audītum |
Common principal parts
| Present / infinitive | Perfect | Supine |
|---|---|---|
| scrībō · scrībere | scrīpsī | scrīptum |
| mittō · mittere | mīsī | missum |
| veniō · venīre | vēnī | ventum |
| ferō · ferre | tulī | lātum |
| sum · esse | fuī | — |
Sum has future participle futūrus; no supine.
What each part supplies
| Part | Use | Stem |
|---|---|---|
| 1 + 2: amō, amāre | Present system | amā- |
| 3: amāvī | Perfect active | amāv- |
| 4: amātum | Perfect passive / future ptcp. | amāt- |
Some dictionaries give the perfect passive participle as part 4.
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- Alphabet & Pronunciation
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- Noun System
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- Articles & Word Order
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- Adjectives & Adverbs
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- Prepositions
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- Voice Endings
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- Mood Forms
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- Participles
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- Perfect Stems & Reduplication
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- Sum (To Be)
Latin grammar reference
- Irregular Verbs
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- Deponent Verbs
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- Infinitives & Indirect Speech
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- Gerund, Gerundive & Supine
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- Clauses & Sequence of Tenses
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- Abbreviations
Latin grammar reference
Sources and scope
Selected reference content from the Word Radicals curriculum, shared with the iOS app. Model forms illustrate patterns; they do not give every form of every word.
Allen & Greenough: Latin Grammar · Bennett: New Latin Grammar