Kilo Lingo
Part of Chapter 3

5 min read

Test yourself (17 questions)

Making and Becoming: The Esperanto Suffixes -ig- and -iĝ-

There is a sentence English speakers write in their first month of Esperanto, and it is wrong:

Mi bolas la akvon.

It looks fine. It is built the way English is built. And it says, roughly, I am boiling, the water, because is something water does and not something you can do to water.

The correct sentence is **boligas** , and understanding why is worth more than any other single hour you spend on Esperanto affixes.

Two suffixes, one fence

The word-building article covers -, -in-, -- and the rest, which change what a word means. -- and -- are different in kind. They change what a word does in a sentence.

  • -- adds a causer. The result is always transitive: it takes an object, and that object wears the -n from the accusative article.
  • -- removes the causer. The result is always intransitive: it cannot take an object at all.

Li la laboron. - He stopped the work.

La laboro . - The work stopped.

One circumflex on a g is the entire difference between make it happen and it happened. Esperanto asks a lot of that character, and it earns it.

They stick to anything

Both suffixes are fully productive, which means they attach to any root where the result makes sense, and the resulting word is real without any dictionary having to bless it.

Root typeWith --With --
adjective warmi to heat somethingi to get warm
adjective full to fill something to become full
noun spouse to marry someone off to get married
intransitive to seat someone to sit down
intransitive to set something up to stand up
transitive sci- to inform someone to find something out
particle for away to remove something to go away

Several of those you already know as vocabulary. , to be born, is (to give birth to) with the causer taken off. , to kill, is with a causer bolted on. , to become, is (to make) with nobody doing the making. You have been using this machinery since chapter one without being told it was machinery.

The transitivity traps

This is where English speakers actually lose points, so here is the list of the pairs that catch people, with the English one-word-for-both verb that causes the trouble.

English saysIntransitive (it does it)Transitive (you do it)
boil the water boilsi I boil the water
begin it begins I begin it
end, finish it ends I finish it
stop it stops I stop it
movei it moves I move it
burn it burnsi I burn it
change it changes I change it
openi it opens I open it
wake I wake up I wake him
rise, raise it rises I raise it

Notice that the fence does not run the same way for every pair. and are transitive roots, so the intransitive member is the derived one. and are intransitive roots, so the transitive member is derived. There is no rule of thumb that will get you all ten. You learn which root sits where, once, and then it never changes again, which is a considerably better deal than English irregular verbs offer.

Why the extra syllable is a feature

It is tempting to file this under annoying. I would file it under honest.

English lets you write the window broke and say nothing whatever about how. That vagueness is sometimes useful and often a dodge. Esperanto makes you pick:

La fenestro is. - The window broke, on its own, nobody's fault.

Iu la fenestron. - Somebody broke the window.

Two different claims about the world, and Esperanto will not let you blur them by accident. Given how often the English passive is reached for precisely to avoid naming a culprit, a language that costs you two letters to be clear is not a language that is charging you very much.

-- is not the passive

Worth stating flatly, because the two get confused. is is the door closed. is the door was closed, by somebody unstated.

Take the side: prefer --. It is shorter, it is more idiomatic, it does not drag you into the long-running quarrel about which passive participle a completed action wants, and in the great majority of cases where a beginner reaches for a passive, what they actually mean is the -- verb. Build the passive when the agent genuinely matters and you genuinely do not want to name them. Otherwise let the thing do it to itself.

on its own

Cut the suffix loose and it is a verb in its own right, meaning to cause or to make:

Li min ridi. - He made me laugh.

Tio min feliĉa. - That made me happy.

Object plus infinitive, or object plus adjective. It is the same pattern as English make somebody do something, and it exists for the cases where the causative would need to attach to a whole clause rather than a single root. exists too, and means to become, doing exactly the job does.

What to take away

  • -- causes it and takes an object. -- happens and takes none.
  • Both stick to adjectives, nouns, verbs and particles alike.
  • Every root is permanently transitive or intransitive; the suffix is the only way across.
  • as , never .
  • -- is not the passive, and it is usually the better choice than one.
  • and also work as standalone verbs: to make and to become.

Practise: test yourself

Fill in the blank

0/6

Add -ig- or -iĝ- and the right tense ending. Write the full verb.

  1. Mi la akvon. (boli - I boil the water) (You are doing it to the water, so you need a causer.)

  2. La tago . (fini - the day ends) (Nothing is ending the day. It ends.)

  3. La pordo . (fermi - the door closed) (No hand on the door, so no causer.)

  4. Li la laboron. (halti - he stopped the work) (The verb in brackets is intransitive, and la laboron has an -n.)

  5. Mi matene. (veki - I wake up in the morning) (The verb in brackets is what you do to somebody else, so turn it round.)

  6. Ŝi min. (timi - she frightens me) (Timi is to be afraid; she is causing it.)

Pick the right one

0/6

Which suffix builds the English meaning?

  1. to heat something (from varma)

  2. to get warm (from varma)

  3. to be born (from naski)

  4. to kill (from morti)

  5. to sit down (from sidi)

  6. to explain, to make clear (from klara)

Translation drill

0/5

Translate into Esperanto. Watch which side of the fence each verb sits on.

  1. The work begins.

  2. I begin the work.

  3. The child woke up.

  4. She woke the child.

  5. He made me work.

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Frequently asked questions

What is the difference between -ig- and -iĝ- in Esperanto?
-ig- adds a causer and always produces a transitive verb, one that takes an object with -n. -iĝ- removes the causer and always produces an intransitive verb, one that cannot take an object at all. Mi haltigis la laboron means I stopped the work; la laboro haltis means the work stopped. The circumflex on the ĝ is the only thing separating make it happen from it happened, so it is worth the keystroke.
Why is mi bolas la akvon wrong?
Because boli is intransitive in Esperanto. It is what boiling water does, not something you can do to water, so it cannot take an object. To boil water you need the causative: mi boligas la akvon. English hides this problem by using one verb for both jobs (the water boils, I boil the water), which is why English speakers walk straight into it. Esperanto refuses to let the ambiguity exist, and the price is that you have to know which side of the fence each root sits on.
How do I know if an Esperanto root is transitive or intransitive?
Look it up once and it is settled for life, because a root never changes class. Every decent dictionary marks it, usually tr and ntr. There is also a rough pattern worth trusting: roots describing a state or something a thing does by itself tend to be intransitive (sidi, stari, kuŝi, halti, bruli, morti, okazi), while roots describing something done to a thing tend to be transitive (fari, doni, meti, fermi, komenci, veki, movi). When you are unsure, an -ig- or an -iĝ- costs you nothing but a syllable and cannot be wrong twice.
Is -iĝ- the same as the passive?
No, and the difference is real. La pordo fermiĝis says the door closed, with no agent implied and possibly none involved. La pordo estis fermita says the door was closed, by somebody. Esperanto keeps these apart cleanly where English collapses them, and -iĝ- is the more idiomatic of the two by a distance. If you find yourself building a passive participle because you do not want to name who did it, try the -iĝ- verb first; nine times out of ten it is shorter and it reads better.
What does the standalone verb igi do?
It is the suffix released into the wild as its own verb, meaning to cause or to make. Li igis min ridi, he made me laugh. Tio igis min feliĉa, that made me happy. It takes an object plus either an infinitive or an adjective, which is exactly the English make somebody do something pattern. Iĝi exists too and means to become, doing the same job as fariĝi. Both are among the small set of Esperanto words that are pure grammar with no root attached.