Lesson 5: Suffixes — -ej-, -ist-, -in-, -ul-

Overview

Esperanto's suffixes work exactly like its prefixes: a single element with a consistent meaning attaches to any compatible root to generate a new word. This lesson covers four highly productive suffixes: -ej- (a place associated with something), -ist- (a practitioner or specialist), -in- (feminine gender marker), and -ul- (a person characterized by a quality). Together these four suffixes allow you to build rich word families from a single root.

One of the most elegant features of Esperanto affixes is that they can be chained. From the root instrui (to teach), you can build instruisto (teacher), instruistino (female teacher), and instruistejo (school/teaching place). Each step is transparent and predictable — no memorization required beyond knowing what each affix means.

Learning Objectives

• Use -ej- to derive place nouns from activity or purpose roots
• Use -ist- to derive professional or specialist nouns
• Use -in- to mark feminine forms of any person or animal noun
• Use -ul- to derive person nouns from adjective or noun roots
• Chain multiple affixes to build multi-step word derivations

Vocabulary

Root	Derived word	English
lerni (to learn)	lernejo	school (place of learning)
kuiri (to cook)	kuirejo	kitchen (place of cooking)
labori (to work)	laborejo	workplace
bani (to bathe)	banejo	bathroom / bath house
preĝi (to pray)	preĝejo	church / place of prayer
ludi (to play)	ludejo	playground / play area
muziko (music)	muzikisto	musician
dentо (tooth)	dentisto	dentist
instrui (to teach)	instruisto	teacher
komerco (commerce)	komercisto	merchant / businessperson
ŝtato (state)	ŝtatisto	statesman / politician
farto (health/state)	farmacisto	pharmacist
frato (brother)	fratino	sister
instruisto (teacher m.)	instruistino	teacher (female)
leono (lion)	leonino	lioness
kato (cat)	katino	she-cat
amiko (friend m.)	amikino	female friend
juna (young)	junulo	a young person
riĉa (rich)	riĉulo	a rich person
malsana (sick)	malsanulo	a sick person / patient
bela (beautiful)	belulo	a beautiful person
stulta (stupid)	stultulo	a stupid person / fool
kuracisto (doctor m.)	kuracistino	female doctor
kuracisto (doctor)	kuracistejo	clinic / doctor's office
instruistino (f. teacher)	instruistinejo	women's school (rare but valid)

Grammar Focus

Pattern 1: -ej- — place associated with an action or thing

The suffix -ej- added to a verb or noun root creates a word meaning "a place where that activity occurs" or "a place associated with that thing."

From verbs:

• lerni (to learn) → lernejo (school)
• kuiri (to cook) → kuirejo (kitchen)
• bani (to bathe) → banejo (bathroom, bathhouse)
• preĝi (to pray) → preĝejo (church, place of worship)
• labori (to work) → laborejo (workplace, office)
• ludi (to play) → ludejo (playground, gaming area)
• trovi (to find) → trovejo (lost-and-found, a place where things are found)

From nouns:

• kuracisto (doctor) → kuracistejo (clinic, doctor's surgery)
• libro (book) → librejo (bookshop, library — though biblioteko is also used)
• birdo (bird) → birdejo (aviary, bird sanctuary)
• porko (pig) → porkejo (pigsty)

Full sentence examples:

• La infanoj iras al la lernejo ĉiun matenon. — The children go to school every morning.
• Nia kuirejo estas malgranda, sed funkcia. — Our kitchen is small but functional.
• En la banejo estas varma akvo. — In the bathroom there is hot water.
• Li laboras en kuracistejo proksime al la centro. — He works in a clinic near the center.

Common mistake: Adding -ej- to a place word that already means a place (urbo, domo) without a new specific purpose. Urboejo doesn't mean much more than urbo. Use -ej- when a specific activity or purpose defines the place.

Pattern 2: -ist- — practitioner, specialist, adherent

-ist- creates a noun meaning "a person whose profession, specialty, or strong commitment is X."

From nouns of field or discipline:

• muziko → muzikisto (musician)
• dento → dentisto (dentist)
• komerco → komercisto (merchant, trader)
• arto → artisto (artist)
• scienc(o) → sciencisto (scientist)
• sporto → sportisto (sportsperson, athlete)
• ŝtato → ŝtatisto (statesman)
• historio → historiisto (historian)

From verbs:

• instrui → instruisto (teacher)
• kuri → kuristo (runner, courier)
• vendi → vendisto (salesperson, vendor)
• programi → programisto (programmer)

From ideological roots:

• socio → sociisto (socialist)
• Esperanto → Esperantisto (Esperantist)

Full sentence examples:

• Mia patrino estas dentisto — ŝi laboras tri tagojn semajne. — My mother is a dentist — she works three days a week.
• Li estas fama muzikisto kaj ludas la violonon. — He is a famous musician and plays the violin.
• Nia instruisto ĉiam klarigas aferojn tre pacience. — Our teacher always explains things very patiently.
• Kiel Esperantisto, mi partoprenas la kongresan kunvenadon ĉiujare. — As an Esperantist, I participate in the congress meetings every year.

Pattern 3: -in- — feminine gender marker

-in- marks a noun as feminine. It is appended to any person or animal noun to specify female gender. The base form (without -in-) is gender-neutral or conventionally masculine in many roots.

Person/family words:

• frato (sibling/brother) → fratino (sister)
• patro (parent/father) → patrino (mother)
• filo (child/son) → filino (daughter)
• amiko (friend) → amikino (female friend)
• kuzо (cousin) → kuzino (female cousin)
• reĝo (monarch/king) → reĝino (queen)
• instruisto (teacher) → instruistino (female teacher)

Animal words:

• kato (cat) → katino (she-cat)
• hundo (dog) → hundino (she-dog, bitch)
• leono (lion) → leonino (lioness)
• kokо (chicken) → kokino (hen)

Full sentence examples:

• Mia fratino studas medicinon en Varsovio. — My sister studies medicine in Warsaw.
• La leonino ĉasis la antilopo. — The lioness hunted the antelope.
• Nia instruistino venis el Brazilo kaj parolas portugalan kaj Esperanton. — Our female teacher came from Brazil and speaks Portuguese and Esperanto.
• La reĝino malfermis la novan muzeon. — The queen opened the new museum.

A note on gender neutrality: Some modern Esperantists use the suffix -iĉ- (unofficial) for explicitly masculine forms, making base forms fully gender-neutral. This is an ongoing discussion in the community, but the traditional system (-in- for feminine, base form otherwise) remains standard in most texts.

Pattern 4: -ul- — person characterized by a quality

-ul- creates a noun meaning "a person who is characterized by X" — often from adjectives, but also from nouns. It focuses on a defining characteristic of the person.

From adjectives:

• juna (young) → junulo (a young person)
• maljuna (old) → maljunulo (an old person)
• riĉa (rich) → riĉulo (a rich person)
• malriĉa (poor) → malriĉulo (a poor person)
• bela (beautiful) → belulo (a beautiful person, a beauty)
• stulta (stupid) → stultulo (a fool, a stupid person)
• kolera (angry) → kolerulo (an angry person, a hothead)
• malsana (ill) → malsanulo (a sick person, a patient)

From nouns:

• strango (stranger) → strangulo (a strange/odd person)
• hero (hero) → heroulo (a heroic person)

Word chains — the real power of Esperanto affixes:

Starting from instrui (to teach):

1. instrui → instruisto (teacher — male or general)
2. instruisto → instruistino (female teacher)
3. instruisto → instruistejo (school, teaching place)
4. instruistino → instruistinejo (technically: female teacher's place — unusual but grammatically valid)

Starting from juna (young):

1. juna → junulo (young person)
2. junulo → junulino (young woman)
3. junulo → junularo (youth as a collective group) — -ar- covered in Lesson 6

Dialogue

Ŝtefano kaj Lara parolas pri profesioj. (Stefan and Lara talk about professions.)

Esperanto	English
Ŝtefano: Via patrino estas kuracistino, ĉu ne?	Your mother is a female doctor, isn't she?
Lara: Jes, ŝi laboras en granda kuracistejo en la centro.	Yes, she works in a large clinic in the center.
Ŝtefano: Kaj via patro? Li estas muzikisto?	And your father? Is he a musician?
Lara: Ne, li estas komercisto. Li vendas meblojn. Sed li ludas gitaron kiel hobio.	No, he is a merchant. He sells furniture. But he plays guitar as a hobby.
Ŝtefano: Kaj vi? Kion vi studas?	And you? What do you study?
Lara: Mi studas en la lernejo de artoj. Mi volas fariĝi artisto.	I study at the school of arts. I want to become an artist.
Ŝtefano: Bonega! Mia fratino ankaŭ estas artisto — ŝi pentras akvarelojn.	Excellent! My sister is also an artist — she paints watercolors.
Lara: Ho! Ĉu ŝi ekspoziciis iam sian laboron?	Oh! Has she ever exhibited her work?
Ŝtefano: Jes, en malgranda ludejo transformita en galerio! Tre kreiva junulino.	Yes, in a small play space transformed into a gallery! A very creative young woman.
Lara: Mi ŝatus renkonti ŝin iam.	I would like to meet her sometime.

Practice

Exercise 1: Build Words with Suffixes

Add the correct suffix (-ej-, -ist-, -in-, -ul-) to create the requested meaning.

1. sport + ___ = sportsperson, athlete
2. kuir + ___ = kitchen
3. riĉ + ___ = a rich person
4. reĝ + ___ = queen
5. vend + ___ = salesperson
6. preĝ + ___ = church
7. malsan + ___ = sick person
8. frat + ___ = sister
9. histori + ___ = historian
10. bel + ___ = a beautiful person

Answers: 1.isto 2.ejo 3.ulo 4.ino 5.isto 6.ejo 7.ulo 8.ino 9.isto 10.ulo

Exercise 2: Chain Derivations

Build a chain of derived words from each root. Use at least 2 suffixes per chain.

1. Start with kuiri (to cook): → cook (person) → female cook → kitchen
2. Start with kanti (to sing): → singer → female singer → concert hall (hint: kanto = song)
3. Start with juna (young): → young person → young woman → group of youth (-ar-)

Sample answers:

1. kuiristo → kuiristino → kuirejo
2. kantisto → kantistino → kantejo
3. junulo → junulino → junularo

Exercise 3: Describe the Person

For each description, create an Esperanto noun using -ul- or -ist-.

1. A person who is always brave (kuraĝa)
2. A person who programs computers (programi)
3. A very angry person (kolera)
4. A person devoted to science (scienco)
5. A poor person (malriĉa)

Answers: 1.kuraĝulo 2.programisto 3.kolerulo 4.sciencisto 5.malriĉulo

Cultural Note

The suffix -ist- carries a special significance in Esperanto culture. Esperantisto — a speaker and advocate of Esperanto — is one of the most common self-identifications used by the community. Zamenhof himself signed early correspondences as "Doktoro Esperanto" (the hopeful one), and the community that grew around the language naturally adopted -isto to name itself. Today, Esperantisto implies not just language knowledge, but often a commitment to the ideals of international understanding that the language represents. When speakers meet at congresses and greet each other with "Saluton, samideano!" (Hello, fellow thinker!), the shared -ist- identity is part of what unites them.