Esperanto participles do not primarily say “past, present, or future from now.” They locate an action relative to the time at which a participant or situation is being viewed. -Ant-/-at- present the action as ongoing or repeated at that reference point, -int-/-it- as completed, and -ont-/-ot- as still ahead. The tense of esti, the main verb, or the surrounding narrative supplies the reference point.
Two independent coordinates: voice and relative time
Every participial suffix combines one choice from each dimension:
| Relation to reference point | Active: describes the doer | Passive: describes the affected object |
|---|---|---|
| ongoing, unfinished, or repeated | -ant- | -at- |
| completed / result reached | -int- | -it- |
| not yet begun, prospective | -ont- | -ot- |
La redaktoro salutis la tradukanton kaj prenis la jam tradukitan artikolon.
The editor greeted the translator and took the already translated article.
Tradukanto names the doer through an ongoing, repeated, or characteristic activity; tradukita artikolo is the object viewed after completion. The participle vowel says nothing by itself about today’s date.
The reference point may be past, present, or future
With esti, the finite ending normally anchors the viewpoint. Compare the same active participle under three tenses:
Je la oka ŝi estis veturanta al la flughaveno.
At eight she was traveling to the airport.
Nun ŝi estas veturanta al la flughaveno.
Now she is traveling to the airport.
Morgaŭ je la oka ŝi estos veturanta al la flughaveno.
Tomorrow at eight she will be traveling to the airport.
Veturanta means ongoing at the chosen reference point in all three sentences. It is not a “present participle” in the English calendar-time sense. The labels present, past, and future participle are traditional shorthand for simultaneous, prior, and prospective relations.
-INT- and -ONT- across shifting viewpoints
Active -int- places the subject after completing an action. Active -ont- places the subject before an action that is expected, intended, or imminent.
Kiam mi telefonis, ŝi estis jam foririnta.
When I called, she had already left.
Kiam mi telefonis, ŝi estis ĝuste forironta.
When I called, she was just about to leave.
This is a minimal contrast around the same past reference point. Estis foririnta looks backward from the call; estis forironta looks forward from it. Neither suffix is anchored directly to the present.
The reference point may itself be future:
Kiam vi alvenos morgaŭ, mi estos jam preparinta la ĉambron.
When you arrive tomorrow, I will already have prepared the room.
Je la fino de la ceremonio la prezidanto estos ankoraŭ parolonta al la gazetaro.
At the end of the ceremony, the president will still be due to speak to the press.
These full analytic forms are precise but marked by their density. Ordinary Esperanto often uses a simple verb plus jam, antaŭe, poste, or an explicit time clause: Mi preparos la ĉambron antaŭ via alveno. Grammatical completeness and stylistic naturalness are not the same thing.
For the full finite combinations, see compound active tenses and compound passive tenses.
Attributive participles inherit a time from context
An adjectival participle attached to a noun takes its reference point from the event or scene in which that noun is viewed.
En 2018 mi intervjuis la baldaŭ emeritiĝontan direktoron.
In 2018 I interviewed the director who was soon going to retire.
The retirement was prospective in 2018, even though it is past now. Translating emeritiĝontan simply as “future” misses the relation that matters.
Morgaŭ ni bonvenigos la hodiaŭ alvenintajn delegitojn.
Tomorrow we will welcome the delegates who arrived today.
Here alvenintajn marks arrival completed before the welcoming. The completed action may be past from now as well, but that is supplied by hodiaŭ, not by -int- alone.
La en la apuda ĉambro laborantaj teknikistoj ne aŭdis la alarmon.
The technicians working in the next room did not hear the alarm.
Laborantaj is simultaneous with the scene described by ne aŭdis. A relative clause—la teknikistoj, kiuj laboris…—is often lighter when a participle accumulates complements.
Passive relative time and the special behavior of -IT-
Passive -at- presents an object during an ongoing or repeated action; -ot- presents it before that action. Passive -it- presents completion or the resulting state. It often, but not always, places the action earlier than the reference point.
Je la naŭa la kontrakto estis ankoraŭ kontrolata.
At nine the contract was still being checked.
Je la naŭa la kontrakto estis jam kontrolita.
At nine the contract had already been checked.
Je la naŭa la kontrakto estis tuj kontrolota.
At nine the contract was just about to be checked.
The three sentences view the contract during, after, and before the checking. However, La kontrakto estis subskribita je la naŭa can mean the signing reached completion at nine, not necessarily before nine. This is an important asymmetry: active -int- robustly looks back to a prior completed action, while passive -it- strongly emphasizes completion/result and lets context settle exact sequencing.
Adjectival, adverbial, and nominal endings do different jobs
The participial suffix carries voice and relative time; the final grammatical ending determines distribution.
| Ending | Role | Example |
|---|---|---|
| -a | describes a noun; agrees in -j/-n | alvenintaj gastoj |
| -e | adds a circumstance; invariable | alveninte, ili telefonis |
| -o | names a participant, normally a person | alveninto |
Alveninte al la hotelo, la gastoj tuj telefonis hejmen.
Having arrived at the hotel, the guests immediately called home.
The guests are both the understood subject of alveninte and the explicit subject of telefonis. -E does not create a subject of its own.
La alvenintoj lasis siajn valizojn apud la akceptejo.
Those who had arrived left their suitcases beside reception.
Nominal alvenintoj identifies people characterized as having arrived. The -o ending makes it a noun; the -int- segment still marks prior completion.
Relative time inside a connected narrative
Ĉu la kuriero jam estis veninta, kiam vi revenis? — Ne. Li estis venonta nur post du horoj.
Had the courier already come when you returned? — No. He was not due to come for another two hours.
The exchange shifts between two orientations around kiam vi revenis. Veninta would locate the courier after arrival at that past point; venonta locates him before arrival. The negative answer does not require changing the participial system—only choosing the correct relation.
Foundational norm, accepted practice, and style
All six participial suffixes with -a and -e are explicit in the foundational grammar. Nominal -o forms are foundationally attested too: the Ekzercaro uses forms such as batanto, batato, mortinto, arestito, manĝonto, and juĝoto. The productive symmetry is therefore standard, but frequency is uneven: -ant-, -int-, -at-, -it- are especially common, while some -ont-/-ot- combinations occur mainly when a plan or impending event is salient.
The historical debate called atismo/itismo concerns the division of labor between passive -at- and -it-. A 1967 Akademio decision supported itismo; a 1989 resolution again supported it and explicitly rejected atismo. Accordingly, use -at- for an action presented as ongoing or repeated and -it- for completion or result, adding time expressions when precise chronology could otherwise be misunderstood. This is the standard system, not merely a stylistic preference.
Common Mistakes
Reading every -int- form as past from now
❌ Morgaŭ mi estis fininta la laboron antaŭ tagmezo.
Incorrect — estis wrongly anchors the viewpoint in the past; -int- does not itself force past time.
✅ Morgaŭ mi estos fininta la laboron antaŭ tagmezo.
Tomorrow I will have finished the work before noon.
Using -ont- for an affected object
❌ La morgaŭ diskutontaj proponoj estas sur la tablo.
Incorrect — the proposals do not perform the discussion.
✅ La morgaŭ diskutotaj proponoj estas sur la tablo.
The proposals to be discussed tomorrow are on the table.
Treating passive -it- as obligatorily earlier
❌ La pordo estis jam fermita je la oka.
Wrong for the intended event at eight — jam instead presents the completed state as already holding then.
✅ La pordo estis fermita je la oka kaj tuj poste komenciĝis la kunveno.
The door was closed at eight, and immediately afterward the meeting began.
Letting an adverbial participle acquire a separate subject
❌ La gastoj alveninte, la direktoro komencis la paroladon.
Incorrect — alveninte would have to relate to the director, not introduce la gastoj as its own subject.
✅ Kiam la gastoj alvenis, la direktoro komencis la paroladon.
When the guests arrived, the director began the speech.
Building a heavy form where time words are clearer
❌ Post semajno la raporto estos estinta jam verkita.
Overbuilt and poorly ordered for the intended completed future result.
✅ Post semajno la raporto jam estos preta.
In a week the report will already be ready.
Key Takeaways
Participle vowels express a relation to a chosen viewpoint: a for ongoing, i for completed, and o for prospective. The consonant distinguishes active -nt- from passive -t-. Find the reference point in esti, the main clause, or the narrative before translating. Keep the completion-centered flexibility of passive -it- in mind, and use simple verbs or explicit time expressions whenever a fully analytic chain obscures rather than clarifies.
Related Topics
- The Six Participles: A System MapB1 — Map Esperanto's six participles by voice and relative time, then use them as adjectives, adverbs, nouns, and compound verb forms.
- Compound Active TensesB1 — Combine esti with active participles to express ongoing, completed, or prospective action relative to a chosen reference point.
- Compound Passive TensesB2 — Combine esti with passive participles to present an affected subject during, after, or before an action.
- Choosing -AT- versus -IT-B2 — Choose -at- for an unfolding or repeated passive action and -it- for completion or its result, independently of the reference tense.
- Relative Time without Sequence-of-Tense BackshiftA2 — Preserve the original verb form in reported speech and thought instead of applying English-style tense backshift.
- Tense in Subordinate ClausesB1 — Choose each subordinate verb from its own time and mood meaning rather than copying English tense patterns or mechanically matching the main verb.