Poetic Esperanto: Elision, Stress and What Verse Can Bend
By Michael McGettrickUpdated 12 October 2026
Rule 16 of the Fundamento allows two elisions: a noun may drop its final -o, and the article may drop its -a. An apostrophe marks the gap. The rule covers nothing else, and the stress never moves.
| Full form | In verse | Allowed? |
|---|---|---|
| | yes: a singular noun |
| | yes: the article |
| no change | no: the -n marks the object |
| no change | no: the -j marks the plural |
| no change | no: an adjective |
| no change | no: a |
Quick check
Now use it: three quick questions on the chart above. The full practice is further down.
Spot the mistake
0/3Each line has one elision Rule 16 does not allow. Tap it.
You meet these apostrophes in the anthem and the old songs. The song lessons lean on this page.
Rule 16: two elisions
The Fundamento's own English version of the rule:
The a of the article, and final o of substantives, may be sometimes dropped euphoniae gratia ... in such cases an apostrophe should be substituted for the discarded vowel.
Euphoniae gratia means for the sake of sound. In practice that means , where a is counting syllables:
| Noun | Elided | English |
|---|---|---|
| | world |
| | heart |
| | humanity |
| | road |
It is always optional. is not worse Esperanto than ; it is one syllable longer. And it costs nothing: by the time you hear in a line, you already know it is a noun.
What Rule 16 does not cover
The rule takes a FINAL vowel, and only on a noun or . Every other ending carries grammar:
| Form | Why it stays whole |
|---|---|
| the last letter is -n, the object |
| the last letter is -j, the plural |
| both at once |
, | an adjective's -a is not a noun's -o |
, | a ending carries the tense |
| an adverb ending |
So can never be the object ( has it after a preposition: ). To say I see the world, you need the whole word:
.- I see the world.
ends in -o but is a correlative, not a noun, so ti' is not standard. PMEG notes that poets occasionally use such forms anyway; in your own writing, leave whole.
l' leans back
is read with the word before it, so it follows a preposition ending in a vowel, such as , , or . sounds like del:
- Under the sacred sign of hope ()- Until humanity's beautiful dream ()- The waves of the sea threatened us (o)
The third line matters: begins with a consonant, and the elision is still right, because the vowel needs is the one in . is Zamenhof's; o is Antoni Grabowski's. Poets occasionally use with no preposition before it, but after a vowel is the normal place.
dank' al: the elision in everyday speech
One elision left poetry. (thanks to) is , a thanks, with its -o dropped:
, .- Thanks to you, I found the way., .- the same, with the adverb ending.
Both are common. Anywhere else, an apostrophe in prose looks like .
The stress stays put
Esperanto stress falls on the second-last syllable. When a word is elided, the stressed vowel stays where it was, so the elided word ends on it:
| Full | Stress | Elided | Stress |
|---|---|---|---|
| | ||
| | ||
| | ||
| | es-PER |
That is the s reason for eliding. Without it, every word of two or more syllables ends on a weak beat. With it, a line can land hard on its last syllable, as Grabowski's do:
,',
,!
' (the brotherhood) ends the first line on a stress; ends the second on a weak beat. How the two endings alternate, how to count syllables, and why rhyming on an ending alone ( with ) is called adasismo: rhyme and metre.
Mistakes English speakers make
| Wrong | Right | Why |
|---|---|---|
. | . | an -o under an -n cannot go |
bel' | | an adjective keeps its -a |
as ko-RO | the stress stays on the same vowel |
What to do next
- Read La Espero and find its four apostrophes.
- Sing Ho, mia kor' and mark every elided word.
- Then read rhyme and metre for counting the lines.
See also
- Rhyme and metre - counting syllables, strong line endings and adasismo.
- La Espero - Zamenhof's anthem, with
and. - La Tagiĝo - Grabowski's song, with
',and. - Ho, mia kor' - an elision in the title of one of the first Esperanto poems.
- The accusative - the
-nthat elision never touches. - The article la - the word whose
-aRule 16 lets you drop.