Word Formation: Prefixes and Suffixes

Understanding how Spanish builds words through prefixes (prefijos) and suffixes (sufijos) allows you to decode thousands of unfamiliar words and create new ones following natural patterns.

Power Tool: Knowing common affixes can triple your working vocabulary instantly.

Common Prefixes

Negation and Opposition

des- (Reversal, Negation)

Reverses or negates the base word:

hacer (to do) → deshacer (to undo) aparecer (to appear) → desaparecer (to disappear) orden (order) → desorden (disorder) agradable (pleasant) → desagradable (unpleasant) conocido (known) → desconocido (unknown)

in-, im-, i- (Negation - Before Adjectives)

posible → imposible completo → incompleto legal → ilegal visible → invisible moral → inmoral

Rule: im- before p or b, i- before l, otherwise in-

anti- (Against)

antibiótico (antibiotic) antisocial (antisocial) anticorrupción (anti-corruption) antivirus (antivirus)

contra- (Against, Counter)

contradecir (to contradict) contrapeso (counterweight) contraataque (counterattack)

Position and Place

pre- (Before)

prehistoria (prehistory) predecir (to predict) prever (to foresee) precaución (precaution)

post- (After)

postgrado (postgraduate) posguerra (postwar) postergar (to postpone)

sobre-, super- (Over, Above, Super)

sobrevivir (to survive - live over) sobrepeso (overweight) supermercado (supermarket) superhombre (superman) sobrenatural (supernatural)

sub- (Under, Below)

subterráneo (underground) submarino (submarine) subdesarrollo (underdevelopment) subdirector (deputy director)

inter- (Between, Among)

internacional (international) intercambio (exchange) interactuar (to interact)

extra- (Outside, Beyond)

extranjero (foreign) extraordinario (extraordinary) extraterrestre (extraterrestrial)

Size and Intensity

mini- (Small)

minifalda (miniskirt) minibús (minibus)

maxi- (Large)

maxifalda (maxiskirt)

ultra- (Beyond, Extreme)

ultramoderno (ultramodern) ultraconservador (ultraconservative)

Again and Back

re- (Again, Back, Intensive)

hacer → rehacer (to redo) leer → releer (to reread) escribir → reescribir (to rewrite) aparecer → reaparecer (to reappear)

Also intensification: bueno → rebueno (really good - colloquial)

Common Suffixes

Noun-Forming Suffixes

-ción, -sión (Action, Result)

Forms abstract nouns from verbs:

educar → educación (education) decidir → decisión (decision) crear → creación (creation) comunicar → comunicación (communication)

Always feminine: la educación, la decisión

-dad, -tad, -tud (Quality, State)

Forms abstract nouns:

real → realidad (reality) libre → libertad (freedom) activo → actividad (activity) triste → tristeza (sadness) grande → grandeza (greatness)

Always feminine: la realidad, la libertad

-eza (Quality)

bello → belleza (beauty) noble → nobleza (nobility) pobre → pobreza (poverty)

Always feminine

-ismo (Doctrine, System)

social → socialismo (socialism) turista → turismo (tourism) real → realismo (realism)

Always masculine: el socialismo

-ista (Person Who Does/Believes)

arte → artista (artist) piano → pianista (pianist) social → socialista (socialist) diente → dentista (dentist)

Gender-neutral form: el/la artista

-dor, -tor (Person/Thing That Does)

trabajar → trabajador (worker) vender → vendedor (seller) conducir → conductor (driver) ordenar → ordenador (computer - Spain)

Masculine: el trabajador / Feminine: la trabajadora

-ería (Shop, Collection, Action)

pan → panadería (bakery) zapato → zapatería (shoe store) tonto → tontería (foolishness) joya → joyería (jewelry store)

-anza, -encia (Abstract Nouns)

confiar → confianza (trust) esperar → esperanza (hope) diferir → diferencia (difference) existir → existencia (existence)

Adjective-Forming Suffixes

-oso, -osa (Full of, Having Quality)

fama → famoso (famous) peligro → peligroso (dangerous) cariño → cariñoso (affectionate) maravilla → maravilloso (marvelous)

-able, -ible (Capable of Being)

amar → amable (lovable, kind) beber → bebible (drinkable) contar → contable (countable) comer → comestible (edible)

-al, -ar (Related to)

nación → nacional (national) región → regional (regional) luna → lunar (lunar) célula → celular (cellular)

-ivo, -iva (Tending to, Capable of)

educar → educativo (educational) crear → creativo (creative) actuar → activo (active)

-ico, -ica (Related to)

economía → económico (economic) base → básico (basic) historia → histórico (historic)

Verb-Forming Suffixes

-ar, -er, -ir (Infinitive Endings)

From nouns or adjectives:

foto → fotografiar (to photograph) vidente → ver (to see) fin → finalizar (to finalize)

-izar (To Make, To Cause)

real → realizar (to realize, make real) modern → modernizar (to modernize) legal → legalizar (to legalize) final → finalizar (to finalize)

-ecer (To Become)

tarde → tardecer (to get late - atardecer) oscuro → oscurecer (to darken) claro → aclarar/esclarecer (to clarify)

-ificar (To Make)

simple → simplificar (to simplify) clase → clasificar (to classify)

Diminutive Suffixes (Small, Affection)

-ito, -ita (Small, Cute)

perro → perrito (little dog, puppy) casa → casita (little house) chico → chiquito (very small) café → cafecito (small coffee)

Usage: Can express smallness or affection

-illo, -illa

mesa → mesilla (small table) pan → panecillo (bread roll)

-ín, -ina

chico → chiquitín (tiny)

Augmentative Suffixes (Large, Intense)

-ón, -ona (Big, Augmented)

casa → casón (big house) silla → sillón (armchair) mujer → mujerona (big woman)

-ote, -ota

grande → grandote (really big) feo → feote (quite ugly)

Pejorative Suffixes (Negative Connotation)

-ucho, -ucha (Ugly, Bad Quality)

casa → casucha (shack, dump) animal → animalucho (ugly animal)

-astro, -astra

padre → padrastro (stepfather)

Word Families

Understanding root families multiplies vocabulary:

Example: LIBR- (Free)

libre (free - adjective) libertad (freedom - noun) liberar (to liberate - verb) liberación (liberation - noun) libertador (liberator - noun) libremente (freely - adverb)

Example: EDUC- (Educate)

educar (to educate) educación (education) educador (educator) educativo (educational) educado (polite, educated)

Example: TRAB- (Work)

trabajar (to work) trabajo (work) trabajador (worker) trabajoso (laborious)

Combining Multiple Affixes

Words can have multiple prefixes and suffixes:

in-creíble-mente (incredibly)

• in- (not) + cre- (believe) + -ible (capable) + -mente (adverb)

des-afortunado (unfortunate)

• des- (negative) + fortuna (fortune) + -ado (adjective)

Practical Strategy

Decoding Unknown Words

When you see desconocido:

1. Recognize des- (un-, reversal)
2. Recognize conocer (to know)
3. Recognize -ido (past participle/adjective)
4. = unknown, unfamiliar

Building New Words

Want to say "drinkable"?

1. Start with beber (to drink)
2. Add -ible (capable of being)
3. = bebible

Practice