by Lawrence McNally
Year 9 Latin • Chapter 2
LESSON 2.3

The Ablative Case

Completing the five main cases - 'by', 'with', and 'from'

What is the Ablative Case?

The ablative case is the last of the five main Latin cases. It has a range of uses and meanings. When it appears by itself (without a preposition), it can mean 'by', 'with', or 'from'.

The term "ablative" comes from part of a Latin verb meaning "I take away". This captures one important thing the ablative expresses: the idea of separation - things being taken away or moved from somewhere.

Etymology: Ablativeab- (away) + -lative (carrying) = "carrying away". This case often expresses how things are separated, removed, or distinguished from each other.

Complete Case Table

Now we can put together a complete table with all five main Latin cases. This is the complete paradigm that you'll need to know like the back of your hand! Click to reveal each ending:

Number Case 1st Declension (f.) 2nd Declension (m.) Meaning
Singular Nominative
puell-a
domin-us
Subject
Accusative
puell-am
domin-um
Object
Genitive
puell-ae
domin-i
Of
Dative
puell-ae
domin-o
To, for
Ablative
puell-ā
domin-o
By, with, from
Plural Nominative
puell-ae
domin-i
Subject (plural)
Accusative
puell-as
domin-os
Object (plural)
Genitive
puell-arum
domin-orum
Of (plural)
Dative
puell-is
domin-is
To, for (plural)
Ablative
puell-is
domin-is
By, with, from (plural)
Key Observations:
  • The ā in puell-ā is pronounced long (unlike the short a in the nominative)
  • Dative and ablative singular of dominus are identical: domin-o
  • Dative and ablative plural are the same for both declensions: -is

The Ablative of Instrument

On its own, the ablative can only be used with inanimate objects (non-living things). This is called the ablative of instrument - it shows what tool or method is used to do something.

gladio pugnat
Ablative of instrument
aqua villam lavant
Using 'with' or 'by'
Remember: The ablative of instrument is only used with things, not people. If you want to say "by a person", you need the preposition a/ab + ablative.

Word Order with the Ablative

The ablative usually comes after the dative and before any adverbs and the verb. Here's the standard Latin word order pattern:

Standard Word Order
Click to see the pattern
cibum servo gladio do
Example in word order

Practice Examples

Let's see the ablative in action! Click each sentence to reveal the breakdown and translation. Pay attention to what tools or instruments are being used:

Ablative of Instrument
gladio servum necat.
aqua vinum miscent.
servi gladiis pugnant.
pecunia cibum emunt.
Pattern Recognition: Notice how the ablative often appears just before the verb, showing the means or instrument by which the action is performed.

Memorising the Complete Paradigm

"You will never know this table well enough!" It is of paramount importance that you commit the complete case table to memory. You must be able to analyse any Latin noun according to its ending and context.

Memory Tip: Patterns
Click for patterns to remember
Memory Tip: Identical Forms
Click to see which forms look the same

Quick Practice

Identify the Case and Translate
vino servos salutant
puellae gladiis laborant
domino aqua damus

Vocabulary