The productive prefix re- modifies an action by connecting it with an earlier situation. Depending on the verb, it can mean returning to a previous place, restoring a previous state, giving something back, responding in kind, or doing an action again. Its stable core is not simply English “again,” but movement or action oriented toward what existed before. For the general method of reading several derivational layers, see affix stacking and scope.
The three central readings
Return to a previous place
With a motion verb, re- often means going back to a place connected with an earlier stage:
Mi revenos al la oficejo post la tagmanĝo.
I will return to the office after lunch.
Ni reiris al la stacidomo por serĉi la perditan sakon.
We went back to the station to look for the lost bag.
Veni takes the speaker's or reference point as destination; reveni means coming to that point again. Reiri is broader “go back/go again,” with the destination supplied by context.
Restore or return something
The action can restore a former owner, location, or state:
Bonvolu redoni la ŝlosilon antaŭ vendredo.
Please return the key before Friday.
Post longa malsano ŝi fine resaniĝis.
After a long illness, she finally recovered.
In redoni, someone gives an object to the person who had it before. In resaniĝi, the subject becomes healthy again. The semantic head remains the action: doni or saniĝi. Re- only describes its relation to the previous situation.
Repeat an action
With many activity verbs, re- means another performance of the action, often involving the same object or content:
Mi relegis la mesaĝon kaj rimarkis la daton.
I reread the message and noticed the date.
Ĉu vi povas rediri la lastan frazon pli malrapide?
Can you say the last sentence again more slowly?
Relegi la mesaĝon naturally means reading that message again. Plain legi denove is also grammatical and can be preferable when the repeated action, rather than a conventional compound, is the focus.
Re- attaches to an action
In the productive system described by the Fundamento and PMEG, re- is used with action words. It modifies how the action unfolds. Many apparent noun forms therefore contain an understood action:
| Form | Underlying action | Meaning |
|---|---|---|
| revido | revidi | seeing one another/something again |
| reveno | reveni | the act of returning |
| relego | relegi | a rereading |
| revena | reveni | connected with a return |
Ĝis revido! Mi esperas, ke ni baldaŭ denove renkontiĝos.
See you again! I hope we meet again soon.
La revena trajno foriros je la oka.
The return train will leave at eight.
The final ending chooses the word's grammatical role; re- continues to scope over the action. A learner should not attach re- freely to any concrete noun and assume that readers will infer the same relation as English “re-.”
Scope with other affixes
Prefix order shows which larger action re- modifies. In remalfermi, the established verb malfermi “open” is performed again:
Post la paŭzo la prezidanto remalfermis la kunsidon.
After the break, the chair reopened the meeting.
The structure is re-[malfermi], not an arbitrary pile of prefixes. Similarly, rebonigi means to make something good again after deterioration: re-[bon-ig-i]. The causative action bonigi is the semantic head modified by re-.
La teknikisto rebonigis la sonon post la paneo.
The technician restored the sound after the failure.
When a stack becomes difficult to parse, use a clause or adverb instead: denove igis la sonon bona. Productive morphology is a tool for clarity, not a requirement to compress every idea.
The same form can occasionally allow two sensible readings. Resendi la dosieron can mean send the file back or send it again. Context normally decides:
La redaktoro resendis la manuskripton al la aŭtoro kun komentoj.
The editor sent the manuscript back to the author with comments.
La retmesaĝo ne alvenis, do mi resendos ĝin sen la granda aldonaĵo.
The email did not arrive, so I will send it again without the large attachment.
If the distinction matters, add reen “back to the former place” or denove “again.”
Re-, ree, reen, and denove
The ordinary adverb ree means “again.” Reen adds directional -n and means “back to the previous place.” Denove is the general lexical adverb “again/anew.”
Ne necesas ree klarigi la tutan problemon.
There is no need to explain the whole problem again.
La infano kuris reen al sia patro.
The child ran back to their father.
An unattached bare re is not the neutral adverb in ordinary prose; use ree, reen, or denove. Bare re occurs exceptionally in (poetic/literary) wordplay, but it is not the productive everyday model.
Response and reciprocal-looking uses
Some conventional re- verbs present a matching response:
La najbaro salutis min, kaj mi tuj resalutis.
The neighbor greeted me, and I immediately greeted them back.
— Dankon pro via helpo. — Mi redankas vin pro via pacienco.
— Thank you for your help. — I thank you in return for your patience.
The second action corresponds to an earlier one. This is still the “back/again” network of meanings, not a separate grammatical voice.
Lexicalized words that only look transparent
Not every word beginning with the letters re should be analyzed productively. Reprezenti normally means “represent,” not “present again”; reciti means “recite,” not “quote again”; resumi means “summarize,” not “add again.” Contemporary speakers generally treat reprezent-, recit-, and resum- as whole roots.
To force the logical productive reading, spelling can expose the boundary:
Post la demando ŝi re-prezentis la ĉefan diagramon.
After the question, she presented the main diagram again.
La aŭtoro re-sumis la valorojn por kontroli la rezulton.
The author added the values again to check the result.
These hyphenated forms are marked clarity devices. Usually an unambiguous phrase—prezentis denove, denove sumis—sounds more natural.
Conventionality and new formations
Because re- is productive, speakers readily understand forms such as reensaluti, reŝargi, and rekonekti in technological contexts. Still, logical possibility is not the same as established idiom. Before coining a dense form, check whether ordinary Esperanto already has a familiar verb: “repair” is ripari, not an invented repari copied from the English spelling.
Register depends on the base, not on the prefix. Reveni, redoni, and relegi are neutral across speech and writing. A highly technical base produces a technical compound; a playful unexpected base may sound (informal) or humorous.
Common Mistakes
Treating re- as a free-standing adverb
❌ Mi faros tion re morgaŭ.
Incorrect in neutral prose — bare re is not the ordinary word for again.
✅ Mi faros tion denove morgaŭ.
I will do that again tomorrow.
Copying an English word beginning with “re”
❌ Mi devas repari mian biciklon.
Incorrect English-based coinage for ‘repair’; Esperanto has ripari.
✅ Mi devas ripari mian biciklon.
I have to repair my bicycle.
Ignoring a lexicalized root
❌ La advokato reprezentis la dokumenton.
Wrong if the intended meaning is ‘presented the document again’; reprezenti means represent.
✅ La advokato prezentis la dokumenton denove.
The lawyer presented the document again.
Stacking affixes without readable scope
❌ La programo malreensalutigis ĉiujn uzantojn.
Opaque and poorly motivated affix stacking.
✅ Post la ĝisdatigo ĉiuj uzantoj devis denove ensaluti.
After the update, all users had to log in again.
Using reveni for any repetition
❌ Bonvolu reveni la demandon.
Incorrect — reveni is intransitive ‘come back,’ not ‘repeat something.’
✅ Bonvolu ripeti la demandon.
Please repeat the question.
Key Takeaways
Productive re- modifies an action and points toward an earlier place, owner, state, response, or occurrence. Build the action first, then let re- scope over it; use ree, reen, or denove when an independent adverb is clearer. Learn lexicalized international roots separately, and prefer an established verb or transparent phrase over a merely possible but opaque coinage.
Related Topics
- Roots and Grammatical EndingsA2 — See how Esperanto combines meaningful roots with noun, adjective, adverb, and verb endings to create usable words.
- Affix Stacking and ScopeB2 — Interpret and build multi-affix Esperanto words by applying each layer in order and keeping the semantic head and participant roles clear.
- Lexicalization and ConventionalityB2 — Understand why structurally transparent Esperanto words develop conventional meanings that cannot be predicted from morphology alone.
- Verb CompoundsB1 — Build and interpret Esperanto verb compounds by tracking the action head, incorporated modifiers, valency, and conventional meanings.
- ek-: Inchoative Or Sudden OnsetA2 — Use ek- to focus on the first moment of an action or package a brief sudden event.
- mal-: OppositesA2 — Form direct opposites with productive mal-, distinguish opposition from simple negation, and interpret its scope in larger derived words.